Nope,
I work from 11mm to 600mm in the same day often. So I tote around quite a few lenses. I have some that overlap. I also adapt old pentax lenses (M42) and tamron (adaptall 2) lenses to my EOS system as well, so I have a few vintage lenses in the mix for their special looks and properties. I probably carry around a dozen lenses at a time, many are small though. I do a lot of macro work as well, so I have a few different setups for that.
I can't go down to one lens. I have two 85's, for two different purposes. It just goes on and on...
And funny enough, I actually use each one a few times in a week. The ones I didn't, I sold. I sold quite a few lenses, including some L's that I didn't use. I only keep what I use. I just rotate a lot of lenses I guess.
Very best,