I'm actually quite surprised how many of you like curtains... sure I remember a thread a few years ago when everyone said curtains were naff and outdated / kept going mouldy / stuck to your legs when you got in the shower!
That's what I used to think, and I had two bathrooms with over bath showers for 20 years and have thoroughly explored the options. I've had folding screens and a horizontal blind contraption. (The blind was better but was always needing parts replacing and looked decrepit and manky a lot of the time. It was better than a glass screen because it was better at keeping water in the bath area, no need to clean limescale, and if folded away when not in use. Even a see-though glass screen makes a bathroom feel much more cramped compared to a blind or curtain that folds away completely.)
After rebuilding my bathrooms, for the one where I didn't replace the bath with a dedicated shower, I'm back to using curtains, and in my scenario it's far better. The scenario is a P-shaped bath that in effect creates a large 90cm corner shower area, that's a cross between a 90cm square and a 90cm circle. I have a 88cm semicircular rail suspended from the ceiling so that when the shower curtain is in use, it overlaps the bath width by half the width of the bath at each end. The side of the semicircle that is next to a wall clings to the tiled* wall as soons as it wet, so literally no water from the corner mounted shower is getting out that way. On the opposite side any water that misses the edge of the curtain falls into the bath.
I ordered the curtain in a custom size so that it could be shorter (only hang 10cm into the bath) and to get exactly the width that covered a semi-circle. I got an unexpected benefit: the custom curtains were made from woven polyester, which means when you spray the shower on the inside, the gaps in the weave allow the outside to get damp. This is great because it means I can just spray the bottom few inches of the curtain with the shower head while I'm waiting for the hot water to come through, the spray forces it against the side of the bath where the dampness on the outside causes it to stick as if it's been glued. So there is absolutely no flapping about or sticking to you by the curtain, it's more rigid and waterproof than any screen I've ever used.
The only maintenance I need to do is maybe once every two months spray the bottom couple of inches of curtain with bleach spray. There's are no solid surfaces or fixtures where limescale can build up. (All screens with a wall support tend to get limescale around the bottom corner where they meet the bath.) If the curtain ever did get manky, a replacement would cost £20. (If something went wrong with the manufacturer-option glass screen I could have got with my bath, a replacement would cost £1500!)
- irrelevant detail: shower area wall not actually tiled, each wall covered by a single solid perspex sheet instead. Far more waterproof than tiles, and no grout to go mouldy.
(The new shower bath is actually actually in many ways better for showering than the dedicated shower. It's main relative downside is the bath floor have a noticeable slope compared to the showers flat standing area, and that the whole bathroom steams up much more, surprisingly the dedicated shower enclosure seems to make a massive difference to steam spreading around the bathroom as a result of the area be completely enclosed, even steam could theoretically escape out the top. It takes about 15 minute for a fan to clear humidity from the dedicates shower, and about two hours fro the fully steamed up bathroom where the shower-bath is.)