Here is my armchair analysis:
I think that is a viable option, but the back of it shows the issues:
1)
Fan noise is always a question. I, personally, use AC Infinity fans to keep my gear cool and accept the fact that I will hear noise when the central air is not running, so I'd be okay with it (assuming it is about the same). But for someone who doesn't use a fan, it is an unknown, but reasonable concern.
2)
No RCA's means "non-standard" cables are needed. IME, the pro-audio cables for RCA to TRS or RCA to 1/4" pin put home audio cables to shame - they are supple (not stiff) and very durable. I have had RCA's work their way out over time (probably from me messing around the cords) and 1/4" or TRS have positive locking systems. You only have to buy cables once and
I'd consider this a net positive - I'd rather use the pro audio inputs/cables.
3)
Speakon connectors - I have never used them, but am betting they have the same advantages over banana plugs (which can be a loose fit of you get the wrong ones) as the pro-audio interconnects do, so
net positive.
4) Concerns over gain structure. This is probably the most damning of these concerns. IME, I have never had trouble mating pro audio equipment with consumer audio equipment; however, other people have. I did not see a switch to swap between -10dBV and +4dBu (like my Focal monitors and the Crown XLS drivecore amps have). Is this a concern? I don't know...actually it is, by definition, a concern, the question is whether it is a valid concern!
I have used a Yamaha P7000S pro-amp without any issues, but I have no idea if that was just luck! I know their is an adapter available, but dislike the idea of having to add another link to the chain.
It is this unknown that, I think, gives most people pause. Crown has obviously decided to embrace consumer audio by addressing all of the concerns above (except fan noise - though they are reputed to be extremely quiet),and I suspect they have had many sales for use in home audio by eliminating the uncertainties!
Edit:
I forgot aesthetics! If it will be in a conspicuous location, I'd go with the Outlaw. The QSC is not bad looking for a pro-amp, but the Outlaws just have a great clean look to them with the mostly blank face plate!