I never pinched mine either, for fear of losing the initial blooms. The long stems make such great cut flowers. That's the reason I never planted Becky or any of the other short ones. Just helped my friend transplant hers.
But if you deadhead them (or cut for bouquets) about halfway down the stem, after the first bloom cycle sometimes the stalks will re-bloom. You can sometimes see a new bud forming in a leaf axil on the stem and cut just above it. If they were late blooming, I'd also give them a little extra fert after deadheading.
