Just thought some of you might be interested in my finding.
Last night, I hit with the PT630 strung with Gosen Polyon SP 17 (50lb) / Gosen OG Micro 17 (50lb) and the feel was just nasty with vibration all over. I got that solid feel but it was not soft or buttery. However, there were more noticeable ball bite than non-poly setup.
Next, I'll put a soft multi on the main and polyon sp on the cross just to see if it feels a notch better. If not, forget about poly on this racquet.