I am sorry. I misplaced the sentence and have corrected my Post accordingly.
My reference was to inform that if you search the www you can find S3D being used extremely quickly [despite being further speeded up by trickery] with the Thumbs of both hands being used. Of course the whole thing could be fake but then there are a lot of Videos and that would take a big time investment.
It might be helpful if a few Users would chime in, who would like to retain the present system, with a view to exploring if there is any reason a Lock Switch would cause anyone a real problem?
With regard to ‘sensitivity’, there is no way that this can now be verified, but IIRC on first use several months ago it was not as easy to Swap Menus as it is today. Again I must say that some Users may welcome this latter situation and it is important to keep as many folk ’ Happily S3Ding’ as possible.