So, since my axles are now COMPLETELY shot (both boots torn for a while, and winter slush just annihilating them), it's time for axle replacement.
Called up Heri and talked with their technical team about the HP axles for the Forester. They don't have any HP heavy-duty listed for the XT's, but they do for the N/A's, and when I checked with Napa, AutoZone, etc, ALL part numbers for their replacement axles for the front were all the same, N/A or Turbo. I also checked all measurements, splines, ABS ring, etc, and they're all the same, so it should work fine.
So, they will be sending me two front HP axles to test on my XT with the 2" lift. Heri seems extremely interested in getting these things out, and finding out if indeed the part number for the N/A Forester's will work with the XT's. The guy I spoke with who was on the engineering team for these axles said that they are an absolute masterpiece of an axle for lifted Subaru's, and I shouldn't have any issues, but we can't be sure unless we try to fit them.