I htink you should stick with your originals, then, poly
I like the style, though they'd definitely be too unstable for me.
I did some trying on, today. Tried on some merrell ones which were fantastically supportive, but not right for skinnies, as they were a little too tall and slim to look right
www.jonesbootmaker.com/ladies/boots/merrell/merrell-boots-rough-wear-boot-2630426511
And some clarks unstructured ones, which did what they said on the tin. I couldn't stand on one foot in them, as my ankle turned straight over as soon as I tried. Shame, as they were quite nice. Almost everything there has those rounded heels, which are simply no good for me.
I've ordered a couple of pairs of boots from dirty Amazon, though. Similar styles, but different colours.
These, in brown, because they'll be good for all but the snowiest and wettest school walks. I have my woolly Rieker Eike for that.
www.amazon.co.uk/dp/B00CHZQ9Z6/ref=pe_385721_37986871_TE_item
And these, in black, just because they're fab and look dead comfy. They have the same sole as my longer boots.
www.amazon.co.uk/dp/B00CJY8EP8/ref=pe_385721_51767431_TE_dp_1
My mum does quite well out of me. She gets a lot of my cast offs, if they develop a problem that I hadn't appreciated the first few times I wore them (eg pain in the evenings after wearing them).