Most people don't seem to bother with these models.
The P90 isn't hi-cap and doesn't have that 'tacticool' look that everyone seems to want. Alas... but its their loss. The P90 is one tank of a gun. As reliable and durable as they come.
Sure the Sig guys may smirk when I pull out my ol' P90 at the range, but it doesn't bother me. I just chuckle as I recall reading once of Mr. Massad Ayoob showing up at competitions with the humble P90. The other competitors giving the 'O crap' look as they realized they were going to be out done by the P90 of all guns.
Enjoy it. Oh, and shoot some hot rounds through it and listen as it says: " Is that all you've got?"