No news on the P99 Compact yet. I had read in 1998 that they may eventually be produced. I hope it meets import requirements.
The micrometer adjustable sight is unnessesary on a duty handgun, but is nice to have for target work. I won't be installing them on my P99's.
My H&K Tactical has them, and at firstI thought that I would knock them off or scratch my arm on them, but that never happened.