I would guess that would depend on the airlines. We all, myself included logged some of that time while time building, but it think like anything else too much of a good thing...you get the point. It is legal time however, I dont think I would show up to an interview, with nothing but safety pilot time in my book if you know what I mean, do some different things, take some family members for a ride, log the time and put the money to good use flying some real cross countries, dont just fly around the patch. Utilize the aircraft to its full potential and get some good experience out of it, that is what its made for. No need to just log time flying back and forth between the same two airports...get out there and have some fun with it since your paying for it anyways.....I took my wife in a 182 to N. Georgia for a weekend getaway when I was time building for commercial..we had a blast..Have Fun and Fly safe....