Are you considering adding the WS for regular gigging, or for at home and in the studio?

There ARE advantages to a fully weighted action, mostly to do with dynamics control, that mostly benefit piano-like patches, and if you were trained as a pianist, can help reconnect you with long familiar technique. But as a general controller for MOST patches, and especially organ type patches and fast synth stuff, it can work a bit against you, depending on how strong your technique is.

If you are thinking of adding it to the T3 as a stage rig, you then have to deal with the issue of two completely different 'touches' right next to each other, and will probably find that the wooden action tends to be best, once again, just doing piano/Rhodes patches. Fran is right in that, if you are doing a whole bunch of LH bass, you have the issue of hand fatigue, as keeping a strong but even touch is essential to bass patches (unless you basically turn off the velocity response), and the wooden action will exacerbate that.

And, to be fair, as good as the T3 is, I am kind of wondering just exactly WHAT you need the wood WS on a gig for? OTOH, if your goal is to have something like this at home for studio, composing, just general mucking around, then yes, you can't have TOO many different action keyboards, as each sound has one particular touch that it works best with, and a WS offers you sounds and techniques that an arranger doesn't.

But, especially in a forum that glorifies lack of weight sometimes over even SOUND, I think you are a pretty brave chap even suggesting this! Even the lightest of the wooden action WS's makes my G70 feel like a PSR!

If you are looking to add a second keyboard for your live gig, unless you ARE primarily a pianist, and your hands are in good condition and you play at least an hour or so a day on a real piano, I'd suggest a good 76 plastic, like the MoXF7, or maybe wait for the Kronos, or an M3 76, or just a good 76 controller and a BK-7m (to add the Roland 'flava').

Hope this helps.