I cut my teeth on open sights and I always shot pretty good with them till my eyes got older, I can still shoot OK with them but not as good as I used to, that's for sure. The Mossin sights do leave a bit to be desired but with some practice with them most people can do pretty well. Someone will come up with a decent mount for them pretty soon considering how many there are out there. I can't wait for one to come out with something that's not a scout type, or costs all outdoors.
Whom ever does that I think will have there future set, they'll be a big demand for them I'd think.