While YMMV, when we ordered an upgrade to our HD system to Genie and mini wireless while keeping our existing HR20-100, I specifically asked for an HR44 on the order. After calling DirecTV a time or two while awaiting our appointment (which was last Saturday), two CSRs and one supervisor (dealing with another issue) confirmed that the majority of upgrades (presumably new installs as well) were going out with HR44s anytime that a Genie system was requested.
Heck, our installer even gave us a SWM16 and stated that all of their upgrade orders were defaulting to this sizable switcher instead of a SWM8 for the purposes of future upgrades at a customer premise.
So, at least in the Atlanta area, we seem to be getting HR44s, and yes, it is nice. I'd just recommend that you specifically have DirecTV notate your account as such, even though it really does all come down to what the tech has.
Also, was called 3 times by DirecTV via automated call by appointment; tech did call prior to showing up; then, had a fourth follow-up automated survey call. The third call was funny in that I took it while the tech was literally installing the SWM16; told her that DirecTV was expecting her to be out in half an hour -- we both laughed.
Personally, I'd rather DirecTV over-communicate with me instead of potentially dropping the ball.