Righto, all scoffed and ready to feed back.
Q1.
First impressions were good. The packaging was excellent - looked premium and a touch 'organic'. Liked the subtle colours and matt finish. Did I read somewhere upthread that they are not recyclable (sp?)? If so, bad, bad Walkers.
The flavour descriptions were suitably poncy - sun-ripened, caramelised, oven-roasted etc. I know it is all blurb, but I like my snacks pretentious 
They were a little in short supply; each pack seemed quite small. But, I guess 25g (?) is about normal for a bag of crisps. Great texture, nice and crispy and light. Good amount of 'bits' - looked authentically wholemeal IYSWIM. So aesthetically, they looked appetising.
Q2.
Tortilla style crispy things. Low in fat & salt but not outrageously so (i.e. comparable to Quavers/French Fries etc.). Lots wholegrain goodness. But a bit high on the sugar content.
Q3.
My favourite flavour was the Cheddar. I also liked the Salted. Chilli was okay, but could have been more chilli-ish. In fact, all of the flavours could do with being a tad stronger. The Sour Cream were a bit 'meh'. And although I had high hopes for the Rosemary, they were a bit wierd tasting and over sweet. In fact, although initially each taste was good, there was a distinct sweet aftertaste which spoilt the crisps overall. I like my snacks savoury and salty, and these were far too sweet and not nearly savoury enough.
I love Salt & Vinegar, so I'd like to see a Balsamic Vinegar & Rock Salt flavour (or somesuch nonsense...). Also, a tomatoey/paprika one would be good.
Q4.
I guess the only different feature is the wholegrain. The salt and fat are comparable to Quavers (I'm guessing). However, I would be concerned about the excess sugar - almost 3x the amount than in comparable snacks. That is not good - nor is the resulting sweet taste.
Q5.
I think I'd mention that they were okay. Good on the wholegrain, fat and salt. But too sweet for me personally - both in ingredients and taste.
Overall, they were perfectly nice but nothing out of the ordinary. I'd buy them if they were on special at the supermarket (I don't tend to be brand loyal any way - just buy whatever is the best deal) and I would probaby give them to DD (3) as an occasional treat. Would stick to the Cheddar and Salted flavours I think.
Thanks for letting me try them though. Thoroughly enjoyed scoffing and waffling. And, I'd be more than happy to blag more freebies take part in further taste tests 