how do *you* personally use P5/Rapture, specifically as a guitarist.
Oh, boy. You opened the floodgates now.
I very rarely record direct guitar into Project5, unless it's a one-off, or a simple acoustic guitar piece with minimal accompaniment. I might do something like record some guitar phrasings, load them into Rapture or DP, and process/automate that with pattern files. I've got a whole library of .ptn files with automation, and it's just as easy to create from scratch, or mix and match. Then I'll rough in a drum track; something simple that sketches out the changes and will be replaced later on.
From there, it's either off to the foundation with some bass variations, or keyboard comping, depending on the type of project. Best part is the EZ Replace Synth for auditioning, quick arrangements in the Arrange Pane, and fast variation edits in the Editor. At this point, the final drum track(s) might start to take shape, as I play the 'rhythm sections' off of each other. I usually have at least four or five alternate keyboard synths and takes to pick and choose from here.
Don't look for a Groove Matrix explanation here. I've tried to incorporate it a few times, but it's just not for me. I can see where it
might be, but right now the implementation is
way too limited for me. There may be the need for a few 'quick entrance' phrases here, so I'll work on the SFX, or perhaps flying in a pre-made vocal comp with one of the sample-based synths. This approach would also include stuff like using the Process menu, or hacking the MFX and Arpeggiator to force it to 'write to track'.
When I get to here, it's either Rewire to Sonar, or importing the .ptn files to it. The raw materials are fairly well-completed, and I can get down to Sonar's forte: audio and real mixdown. That's not to say that there isn't some more 'back & forth' again, but we're talking generalities here. Break out the 'big gun' processing, and concentrate on molding the raw elements into a coherent piece.
With Rapture, I mentioned loading phrases. More often, I'll 'steal' some content from Dimension Pro, split it by note ranges and velocity layers, and play a 'virtual' guitar from a MIDI guitar or keyboard. (OK, I think that I'm a fairly good keyboardist; more a synthesist. Pianist? No. My training is all informal and self-taught.) Between the two (DP and RP), there's enough content and and processing options to cover most any situational use. And more importantly: with high-quality results. I'll confine that to the single example above.
Hey, if you're so inclined, you can always contruct a phrase with any patch/preset, process it with something crazy like Spectron, and then load it right back into the synths again. 'Resampled', in a manner of speaking. I could go on, but I think that's probably more than enough for one sitting. That's not to say that other synths/hosts/processing don't slide in along the way (Xphraze is a current 're-discovered' favorite), but that isn't what you asked about.
Good enough for now? Free free to follow up.