Waaaay back when the HR-54 went into its second round of beta testing, I was a lowly broadcast technician at DTV that got forwarded an email to sign up. A few months prior, I had worked as an installer, and they hadn't yet deactivated me. So I signed up for the beta, the unit arrives (it is only very very slightly different than the production unit. I think it's got a smaller HDD and there's a few pin headers that I'm not seeing in my production box on my desk at work here).
Well, it's a self install, and the instructions that came with it are "unhook your old genie, plug in your new one, and wait 3-5 days for us to activate it". Well, I wasn't having any of that, so I called ISS (installer support line) and told them "hey, I work in broadcast, and I need my tv all the time, but I also got roped into beta testing this box, so I need to keep both on the account." Escalation was made, turns out it was a guy I knew from work, and he basically went ahead and did some magic to put it on.
Now, for those that are like "you shouldn't be able to do this" and "burn the witch." I really want to make it known that there are circumstances where private residences can get double genie installations. When I was installing, I hooked up the gamestop CEO's dad with DTV, and guess what! He has 2 genies. The system automagically blocks regular staff members from creating and modifying accounts to support dual genies, but there's some kind of VIP process whereby you can load more onto the account.
For me, its a little different now. I've moved from broadcast into an engineering position, and although I'm not about to divulge what I do, its nice to have the 2nd genie for troubleshooting wide-scale consumer impacting issues when on-call without disrupting the family's viewing. I keep it in my project area, which doubles as a home office.