Hi Bob, yes I've seen that first video before, not the second, as it appears to be for the Mac people.
Adding in a Playable RealTrack part seems like a daunting task from the video,
but then again so do a lot of functions with BIAB (think ACW as an example).
I'm guessing that once you've done it a few times, it would become quite natural.

I wish I could speak from experience on PRTs, as I've only dabbled in them to see how they work.
For one thing, if I needed an exact phrase or lick, I don't have the luxury of

"contrast this video on using playable RT's with the ease of plugging in a keyboard and recording a midi phrase"

Don't have access to one, and couldn't play it if I did. Similarly a wind controller.
I would still like to hear someone's opinion on PRTs (that had previously used MIDI exclusively),
and had now a solid grasp of using them as part of their normal musical process.
That way we could get the pros and cons of each. Maybe PGMusic Support could do THAT video!

As for me, if I needed a specific part, I would have to use the staff roll, the piano roll or the QWERTY keyboard, similarly a daunting task at best.

LLOYD S