I think some of the Panduit hst is rated for wet,but understand about wanting to double check.
The port out that way restricting use of al was probably due to unfounded concerns about corrosion, no?
Big thing is you did a good
and cost effective installation.
actually, i think they were pretty well founded concerns about corrosion.
a swaged connection is fused in such a way that it's effectively not separate
material any more. that leaves any moisture in the connection to be a concern.
by the time that heat shrink is fully collapsed, that connection is hot enough
that there is no moisture anywhere around it.
the problem otherwise, is that you have a setscrew that can loosen over time,
and moisture that can wick into the aluminum, and corrode it over time.
the drawback with field installation, is that a setscrew lug is UL listed, but
setscrews can, and in my experience often do loosen up over time.
i don't use setscrew lugs for either copper or aluminum any more.
just a personal preference on my part, but it seems that i'm not alone in
this... milwualkee is now making crimpers.
burndy may have to get their pricing policies under control.
https://www.milwaukeetool.com/power-tools/cordless/2679-22