I've used the Trail Pro for 2 years now...I do feel naked without it now.
It tends to get a little hot in the core (front, back is fine)...so make sure you have a breatheable jacket with GoreTex like KLIM, and wear less underneath (base layer + light mid layer - no cotton!) . Its a bit harder to put on than the zipper styles, but I do like that it has full plates/protection across the chest.