I have it, and have been using it for two weeks. I emailed my DSN, who had a meeting with my Consultant, they okayed it, I phoned the GP, he wrote a paper prescription as it wasn't on his formulary, and my pharmacy got it in. Took a week all in.
It is miraculous after meals. I was warned not to take it more than two minutes before a meal. I ignored that after two days for my am dose - the reason I wanted it was to bring down my after breakfast high that was out of control. Now i do a correction and 1/3 of my breakfast dose on waking, get washed and then do the rest of my breakfast dose just before eating and my after breakfast blood sugar has been about 7.
I went on a four and a half hour walk with my dog and that would normally have entailed a LOT of glucose - but I never went under 4.5 and ended on 7.5, only needed one and half bottles of glucojuice (15g each) and didn't go high OR low after. (I'm on a pump, Medtronic, and CGM so can check every few minutes.)
BUT - and there is a but, the vitamin B or one of the excipients seems to be very irritant. I have had to change my cannula every 48 hours (normally every 3 days) and even so, it leaves a small pink lump under my skin.
Apart from that - miracle insulin, yes, it's just like being normal. Brings highs down very quickly.