You should start saving your money then because Sire has said that they ARE going to offer a P bass. Their parent company, Dame, sells a PJ that isn't available in the U.S. They will likely make a few changes - probably use the same preamp with the sweepable mids that is used in the current M series and V series - before they offer it here. I like PJs too, hence the Talman and the fretless LTD in my avatar, but I'm hoping Sire will also come out with a straight P model, too. When it happens, I would expect the pricing to be similar to the V7, so probably at least $175 less than the Talman 600.
The Sire also uses a bone nut, BTW, and their necks also have binding.
Although some people here seem to be impressed with it, I don't think the idea of using the active treble knob as the tone control when in passive mode is such a great idea at all. It's a cheaper way to get it done but not very practical. Think about it, if you switch from active to passive or vice versa, you may then, in addition, have to also readjust the knob - unless you just happen to like it set the same for both active and passive. And the Talman's active/passive switch is not anywhere near the tone control knobs, so if you have to switch and then adjust, it's a lot of movement. Sire's design works much better, IMO. It has a dedicated tone control knob just below the volume knob. And the switch is mounted right on the control panel. It's easy to reach yet not in the way when you're adjusting the mid or bass controls.