Had mine a year and a half. As others have said, it looks good and feels good. I used it a bit with my Subsequent 37, Reface YC and more recently with my Lyra 8.
I bought it because it could be used “stand alone”, i.e. USB power source and no need for a laptop connection. However, while it’s true that it can be used in this way, to get the best out of it you need to use the software to assign shiftings to MIDI / CV outputs, tweak curves and combinations, name and save patches.
So mostly I don’t use it because I can’t face opening my laptop when I’m trying to make a patch or jam. If there were a way of auto-assigning shiftings to CC (like how you can simply touch and hold a mod destination in the SS37 to assign it to the mod bus without diving into the menu), and some sort of haptic feedback way to tweak curves using the hardware itself then it would see a lot more use from me.
I imagine that if you have a laptop / DAW as part of your music creation process the Touche would be a more compelling prospect. For me, having to separately optimise the controller for each patch I make on the computer takes the fun and inspiration out of it. Just my 2p.
Edit: also to echo what has been said above about the Roli - my friend has a Seaboard, whilst theoretically the Seaboard has the more power and flexibility, the tactile feel and response to me of the Touche is much nicer and more inviting. I think Expressive E really got that right.