This is just an update to my post above.

With Blender, one can learn new things everyday...

I'm just an intermediate user, and I only use Blender to create content for Poser/DS with a little NPR rendering here and there, but I barely touch probably 20-30% of the tools and functionality within.  I just learned that Blender does indeed have the ABF/LSCM UV switching that I wished was available in my previous post.  I found it by accident when I pressed F6 testing some UV functions, and it never occurred to me that it would be a conditional parameter (forefront unexposed) in the tools parameter settings window underneath the tool-bars (which I never keep open) that is linked with Function 6/F6 pop-up parameters (which I do use consistently).

Just thought I would let others know, in case there is anyone else out there that would like to know this information as well.  I find it odd that after viewing tens of dozens of UV tutorials for Blender out there over the years, I have not come across one author who shows this, or even talks about either of the algorithms.  If anyone has seen a tutorial showing this (text, or video), please share a link, so I, and others, may view it (thank you, in advanced).

ABF is the "Angle Based" parameter, and LSCM is defined by "Conformal".  Also, Blender does default to ABF as I had previously suspected.