I'm not usually into gig bags, but that moncase seems to look like a good product. i would see how that would help, if you have a bunch of guitars with hardshell cases, and you start to run out of room in your house!!
one thing about mosrite cases, they are realllllly built rugid. may mosrite cases are even heavier then my fender p-bass case! I guess heavy is a minus factor when it comes to transport, but on the plus side, you know the instrument is really well protected.
a friend of my always swore up and down about the heavy duty flight cases for guitars though. he told me about the time in the 80's when he was on tour in an RV and his freakin guitar fell out the window at 60 miles an hour!!!!!! When he opened the case, the guitar wasn't hurt, and was even still in tune!!!!!!!! now that, my friends, is a kick butt case!!!
ps- but I wouldn't test this idea guys