I have had a little time to experiment with this plug in, both the VST and the ProChannel modules.
I used it on a drum track today, and loved it. At first it was a little too much, but when I dialled it back a bit (and used the parallel dry/process knob), it sounded fantastic. The EQ does have a certain "Pulteq trick" about it.
I also got a nice bass sound, when used sparingly. At first I used my usual 1176/La2a mix on the bass, but then tried out the PC +10DB compressor instead, and got a great sound. You can add some "bite", without over compressing it.
I have yet to try it on a vocal.
I think the EQ will definitely be useful for certain "colours", more like a Pultec than a standard EQ, once I have played around with it enough. Same with the compressor.
I would highly recommend it if you are looking for something a little different from the other Compressors/EQs available in Sonar. I love the PC76, Ca-2a, 4K Buss, 4K Channel and the Softube FET compressors (and the Quad Curve EQ and Softube EQs), but really like the alternative sounds that I am getting with the +10DB.
I put off buying it at first, thinking that I didn't need yet another compressor, but am starting to see that this one is a different beast. I don't think that I will use it all the time, but I will get sounds out of it that the others won't provide.
BTW, if you want a Pultec EQ, I HIGHLY recommend the Nomad Factory Pulse Tec EQs. Fantastic. The Blue tube one is nice, too, but the Pulse Tec EQs is/are TRUELY AMAZING, IMHO.
On a side note, I emailed Boz with a query, and got a response within a couple of minutes. Now, that's great support.