As someone who has owned multiple models/calibers of Glocks at the same time, I can tell you this can get tricky. It's hard to make a sure recommendation without ever firing the M&P .40 compact.
At one time I had 3 different guns that I carried depending on the circumstances. The problem was I had 3 different calibers. 9mm, .40, 357sig.
I don't feel undergunned at all carrying 9mm. With modern self-defense ammo, the difference b/t the calibers is negligible. For this reason I am slowly going to 9mm across the board. The problem I have right now is hunting laws. I am an avid hunter; and I always carry a handgun with me. The law in Oklahoma in regards to hunting with a handgun states you have to use a minimum of .40 or 357Sig.
I want a compact also. But I think I'm going to wait and see how the M&P .40 compact behaves. I have a lot of experience with both the Glock 26 and 27. I love the Glock 26. The Glock 27 has enough recoil, that I prefer the Glock 26 for training and carry. I can handle the recoil, but it is stiff. I think the recoil of the M&P .40 compact won't be as bad as the Glock 27, but I don't know for sure.
If you can wait until the compact .40 comes out, wait and see how well it shoots. If you don't have a problem carrying 9mm, then trade your fullsize .40 for a 9mm. It is much easier to have the same caliber in multiple guns. But sometimes it just doesn't work out that way. If you plan on carrying both guns at the same time, then the caliber needs to be the same.
At one time I had 3 different guns that I carried depending on the circumstances. The problem was I had 3 different calibers. 9mm, .40, 357sig.
I don't feel undergunned at all carrying 9mm. With modern self-defense ammo, the difference b/t the calibers is negligible. For this reason I am slowly going to 9mm across the board. The problem I have right now is hunting laws. I am an avid hunter; and I always carry a handgun with me. The law in Oklahoma in regards to hunting with a handgun states you have to use a minimum of .40 or 357Sig.
I want a compact also. But I think I'm going to wait and see how the M&P .40 compact behaves. I have a lot of experience with both the Glock 26 and 27. I love the Glock 26. The Glock 27 has enough recoil, that I prefer the Glock 26 for training and carry. I can handle the recoil, but it is stiff. I think the recoil of the M&P .40 compact won't be as bad as the Glock 27, but I don't know for sure.
If you can wait until the compact .40 comes out, wait and see how well it shoots. If you don't have a problem carrying 9mm, then trade your fullsize .40 for a 9mm. It is much easier to have the same caliber in multiple guns. But sometimes it just doesn't work out that way. If you plan on carrying both guns at the same time, then the caliber needs to be the same.