Swapping disc brake wheels
I've been commuting on a entry level road bike (Trek 1.2) which I really like, other than the minefield known as downtown Toronto. I was a noob to road bikes and now knowing what I know I'd like to move up from the Sora groupset I'm using.
Thanks to a promotion at the LBS I am VERY close to making the move to a CAADX 105 Disc. I've been eyeing it for a while and it this weekend it falls inside my budget ($1550 CDN, all-in incl. taxes). The bike will be a year round commuter, plus I'll be adding in some gravel roads and rail trails through the summer. Add the options available for racks and panniers and this looks like the bike offer me all sorts of versatility.
Rather than switch tires around between a road friendly set or knobbier off-road, I'd like to eventually get a second wheelset and just switch the wheels if possible. So my question is will the fact it uses disc brakes present a problem? I know I'd need a disc brake wheel, but are the alignment of the disc generally consistent that it will fit reliably in the caliper? Is anybody doing this or am I asking for problems?