dkl, on the fronts, I think it is easier to just remove the guide bolts. They aren't torqued nearly as tight as the carrier bolts so they are much easier to remove. Plus, by leaving the carrier behind, you only have to deal with the weight of the caliper. The front caliper is big, add the weight of the carrier and it will be harder to work with (plus, more risk of dropping it and damaging the brake hose).

Honestly, can't say if JCL is right about being able to remove both guide bolts in the rear. I was following the DIY and didn't even attempt it. I guess I should have tried rather than fighting with the carrier bolts.