Funny, I love the clean sound of a HR Deluxe, and especially love the 'verb. I just sold mine and kind of regret it.
I sold the Deluxe because I had the Mod50, but to be honest, I preferred my HR Deluxe to my T/D module. Also preferred the reverb in it. The problem was that the Deluxe was so loud that it was hard to use. It sounded best when turned up a bit, but at that volume, it was virtually unusable -- even for gigs in small venues! So, I am happy with the T/D, but still miss the HR Deluxe from time to time. It had a kind of shimmer to it that the T/D doesn't seem to have. I may change the preamp tubes in the T/D to see if I can improve it.
I wouldn't use the HR Deluxe as a back-up amp, though, because it's too heavy, and I'm a wimp. My Mod50 is heavy enough. At the moment, I don't take a back-up, but if I start doing so, it has to be something lighter. Maybe the new Vox nightrain head.