Just come out from procedure now and I can't believe how easy it was, i get that everyone's experience is different but just giving mine. I had sedation which honestly didn't seem to make a difference and the throat spray which is absolutely fine too. They were in there for around a minute. 3 or 4 gag reflexes (had worse after a night on the beer tbh) 

so yeah to summarise do not work yourself up as it will likely be fine and it only lasts a very short time, just take your mind somewhere else, it really helps!
 

if i had it done again I wouldn't bother with sedation but thats just me.

cheers