Oh, I didn't check KDE-on-win for a long time. And anyway I feel at home in the GTK2 environments.
I solved the problem of dual booting by leaving Windows for good. Part is I wouldn't ever reboot anyway (who wants to, and lose everything that's going on?), part is I was fed up with Windows 7 for petty reasons. Disk/memory intensive for my own taste, but foremost after ten years of using Windows 98 then XP with basically the same GUI, there were more than one thing that pissed me off. I had a hilariously ugly desktop at some point, with my attempts to make it more traditional.
I made my life worse, had some ugly quirky desktops (ugly gnome2/mate layout, random combinations of mate/nautilus 3.x/xtce/lxde iwith duplicate tools and a broken icon there and the wrong file manager coming up.. CLI-only debian squeeze NAS that was semi fucked up.. lol!
But in the end, Mint 16 Mate and Mint 17 Mate saved the day. I can install the latter on any buddy's laptop or desktop in 20 minutes, install or tweak just one thing or three and it's done!
Now, what were we talking about..
Yeah I will probably try KDE 5.1 (if it is to have such a versioning scheme) down the road. For psychological reason (let it double-extra mature) and because I now see a philosophical similarity with Mate. Provide a GUI that's still about the same a decade later, but really maintained and with ever so slight improvements here and there that I can't pinpoint but the thing feels ever more polished.
I'm waiting on LXQt 0.8, too (more than KDE). When it's out I'll jump on it to try it first time. High hopes there. I think the main dev has good taste.