nope not really. maintenance/reliability is the same. Its only that the IE model is so easy to deal with in cold weathers. carbd bike is a bitch to start in cold weathers. Also IE comes stock with a lil better stock power-rpm range i think.
Sounds like either way, you'll have a good shop set the bike up. In that case, you don't worry about it for quite a while.
Carbs will wear the emulsion tubes and begin running rich after some (I don't know how many, at 13k I'm not there yet) miles and require replacement. It's actually something you could learn to do really easily.
Other than that, there's really no maintenance.
Two points though; with carbs:
1. If you get itchy in the spring and want to get out when it's 40-50 degrees, she'll start fine, but carb icing will be a PITA
2. It's just a little harder to pack her up for winter storage. In either case, you put fuel stabilizer in the tank and run the bike to distribute it throughout the fuel system. With carbs you have to run it a long time to purge the float bowls or you have to drain them. With injection, there's not much capacity to the fuel system and you can get stabilizer to the injectors (the end of the line) pretty quickly.
I have carbs, but if it was my money today, I'd rather have an '00