Today I had the chance to test the Tikit. Pressumably my size was M which is what I rode, I'm 5'8", 163 lb.
It was a very comfortable ride all along, 8 sp gearing is good and more than adequate, even for steep hills,
giving you a 30.5 ratio for the lowest one, that's pretty good. Handling was twitchy, but you get used to it according to the sales rep.
My only complaint was my position on the bike, coming from road bikes like my Six13 cannondale, I
felt too cramped being too upright and close to the steering, perhaps sliding the saddle more backwards and switching to a longer stem might solve my problem per the rep. The stock saddle is way too cushy for my taste, that can be changed to a more personal taste, I think. With the stock pedals I felt the bike was dragging, too slow, but I would've loved to put on clipless to push it to its limits having my correct psition and set-up, of course I don't expect a road bike like performance but at least some speed for its class. The icing on the cake is the amazing speed with you can fold it, just impressive.