Thank you to all who have helped. I actually already have a very nice PSW inverter/charger (Xantrex ProSine 3.0 complete w/external control panel), but it's WAY overkill for my needs, and 10+ years old. I was considering selling it and replacing with something smaller and new. It's current value wouldn't allow for me to replace with another PSW without adding more cash than I want to spend on this project though, which is why I was thinking about MSW.
I will likely just go ahead and install this Xantrex and hope it lasts a few years. The inverter won't get used more than a week or two a year, but I was hoping to utilize the charger as a nice upgrade to my trailers crappy WFCO unit. My trailer is plugged in to power pretty much year round.
'04 GMC Sierra 2500HD, CCSB, D/A, MaxBrake, B&W Companion, Retrax Pro, AR Power Steps
2013 Rockwood 8289WS w/Diamond pkg
1969 Camaro RS/SS Convertible
Dad's old 1968 Empi Imp (recently recovered from under 21 years worth of boxes/dust)