I apologize, in advance, for resurrecting this thread, but I thought I should post my thoughts on the shaver.
A friend of mine let me borrow his OneBlade and I have now used it for four shaves. I know this might be a tad early to get proper impressions of the razor, but I believe I have a good understanding of how it works, for me.
I would consider myself an experienced wet-shaver having used much too many DEs, SEs, and a few straights.
I have used both the Feather and the GEM SE blades, each for two shaves, one of the GEM shaves was for a head shave.
I have to say that this shaver is quite mild, but very effective. Granted, I have to perform 3 passes with quite a few touch-ups and I have to actually apply pressure while using the shaver to get close shaves. but I hardly get any irritation, at all.
I have to say that the Feather blades work much better as they are much smoother than the GEMs, but they start dulling at the end of the first shave.
I will continue to use the shaver until the end of the week to get a better assessment, but, for now, I really enjoy the shaves with it and I may have to invest in one, at some point, as it is such an easy razor to use without having to worry about cuts, nicks, or irritation.
The one big disappointment for me is the handle. I just don't like it and I find it very uncomfortable compared to my regular circular knurled handles.
This is one significant factor that might deter me from actually purchasing this shaver.
Thank you for your patience in bearing with my words.