Thank you for your insightful reply 
I think I probably will not self install, but will either get my semi-experienced friend or a pro to do it. I got the impression that it is frowned upon here to so. I actually phoned somewhere near to me that was reccomended by walletmor and they refused, saying that it’s too much of a pain, essentially (long time to install, fiddly, not able to use scalpel). That surprised me.
Anyway, good point, I didn’t consider about blood thinners - aspirin would be a notable one to accidentally take.
The other person I noticed with (perm) numbness with a flexNExT was here: Numb skin above a Titan implant - #7 by anon3825968
Would you mind telling me about the install process? It’s massive… I assume you had to get someone with a scalpel? Does it still work? I see they discontinued it because of a high failure rate.
That’s cool about the scarification - I have never seen someone with this IRL, but I’d like to haha.