My guess is that, since they already started giving other trees skills with invulns at their bases, that scout will either have a few more skills with invulns to compensate (even though many of them already have quite long ones), or they’ll add one to the base as well. Or perhaps have every “core” scout path have at least one. Cloaking has always been a bit of a mess for a wide variety of reasons.
Cloaking can serve as more of an opener and a way in, which it always served for archer’s purposes, I don’t see why that would change once it got moved over to scout, especially given its shorter (non-100% uptime) duration. I don’t think it was ever intended as a means to escape, though you have the option with Ignas if you so desire. It’s get in, murder somebody, peace out.