Nice. I've heard of that tip before and I have the U-die but not the pusher. For .40 I chose the U-die instead of adding an extra step to my reloading and so far it's worked. I stopped guaging my reloads after the U-die and I havn't had any malfunctions.
I tried some test loads with the 10mm and noticed, just like with the .40, that it really squeezes the rounds down in diameter.
I need to find some more 10mm brass as well, so far I'm just running some FC I got with the pistol I bought and I havn't dropped the hammer on some starline brass....