Functional bikes. Not Porn not Anti

I used to just have one bike for a few years, an On-One Inbred, rigid, with a very light wheelset. I used it for XC mountain biking, bikepacking, a bit of road touring, commuting every day, and the odd road ride (although not with roadies of course, too slow). Then I built up a fixed gear roadie but preferred commuting on the Inbred so I sold it. I also got a Krampus which is a better MTB but obviously naff for commuting.

Now I am thinking a 3-bike stable something like:

1. Slow - Surly Krampus - MTB and bikepacking
   
2. Medium - Inbred - easier MTB, mixed-terrain loaded touring, commuting
   
3. Fast - Genesis CdA - road rides/road touring, bit of towpath use