And in typical Lychinus fashion he will replace the organic beard with a veritable forest of fine mechadendrites. Easy to care for, gives him a wonderful set of fine manipulators and anyone that gets into close combat will be in for a very nasty surprise.
Considering what the average techpriest looks like, the only non-hostile territory in WHF would be a place with no inhabitants of any sort.
If he's a dwarf complete with beard, then it's possible that the augs wouldn't have made the trip.
The paranoia and (potential on his part) backstabbing fits. The biggest difference is that Lychinus actually believes in the notion of quality construction and proper equipment design.
Well, yeah, but more to the point is that it exists at all. Lychinus scavenger works better when he has existing tech to scavenge. That basically means dwarves, dark dwarves, or skaven. The dark dwarven stuff is all pretty badly Chaos-tainted (they tend to run their tech on bound demons) with the associated issues. The standard dwarven stuff actually *is* pretty well-built, but it progresses *slow*, and if he was a dwarf himself, he'd fit in a bit too well (unless he was in one of the lost holds, I suppose. That could work too.) The Skaven stuff is the most advanced, and also the least well-built, which means that there's all sorts of stuff that can be broken down for potentially useful materials, with no temptation to use it as-is.