I think they are great. The big front bell is a bit of a pain, but I really haven't noticed a problem with eye relief because of it. I have a couple mounted on Mauser 98s and they work fine. I dropped one of my rifles so hard on the concrete that it dented the bell and the scope was fine.
Hey, for less than half the price of a Leupold I can't tell the difference in optical quality. And as for durability and service issues, for less than half the price, buy two and have a spare if that really concerns you. I'll bet you I could get a new Weaver from Natchez quicker than I could get a Leupold back from the shop and still be ahead.
