Dawg,
Thanks for your impressions.  I know everybody's recoil perception is different.   My standard hunting load is a 420gr WFNGC at a chronoed 1,278fps using a hefty dose of H-110 (I wouldn't go higher) out of my .475.  It i more comfortable to shoot than my .454 with 300s at 1,500 +.  I also ran some 330WFNGCs out of the 475 using Lil'Gun.  I didn't chrono the 330s, but guess they're running real close to 1,500 fps -- it also was more comfortable than the 300s out of the .454.  In the .475, The 420s at 1,278 are more comfortable than the 330s at approx 1,500fps.
My .454 is a FA83 and has a 6" unported barrel -- the .475 is also a FA 6 incher, but the barrel is magnaported.   It has been a while since I've worked with the .454.  I have to change the priming system on my 550B for the .454.  I've been shooting the .475 so much that I just haven't gotten around to it.
I bought the .475 in August on Gunsamerica, and now have 4,100 rounds thru it.  Most of those are 400 grainers right at 1,100 fps.  I really like the .475 with the ported barrel.  Like you, I wouldn't have ordered it that way, but wouldn't hesitate buy another one with ports.
Paul