The 9mm +P rounds outperform standard 38 Super. Seems like a lot of work for a marginal improvement in velocity with a 38 Super +P. Now if you would consider the 357 SIG I could see the point.
I used to love being able to hit hard at 1000 yards. As I get older I find hitting a mini ram at 200 yards with the 22 oddly more satisfying.