I've been working with Peter Auricchio on fixing some of the playability problems in the 3rd movement of my trumpet concerto. We settled on having him begin the piece on the B-flat trumpet to give a richness to the opening - then move to the piccolo trumpet to allow for some soaring moments. The movement returns to the B-flat trumpet to round out the piece and give the melodic line warmth.
Here is a midi realization:
The piece is destined to be performed by Mr Auricchio with the Niwot Symphony Orchestra for their 2010-11 season, although a final date hasn't been set. I'll keep you posted.