Oh yes, I've always used harnasses too for my wiener dog and basset. Both are long-backed dogs and prone to back and neck problems (can't remember which breed this was for, but the statistic was 1 in 4 had back issues). So I never wanted to do anything to invite a problem in their neck or back, since they are prone anyway. Takes half a minute more to put on than a collar, but I decided it was worth it.
If you get one for Petunia, post a pic..!
If you get one for Petunia, post a pic..!