Gerry,
I hear ya. I'm torn between the idea that the rack would cost as much as (or more than) the gear inside, but then I remember this:
I bought a second MP-2 as a backup, because this gear is old and not to be trusted...have a backup. Well, the 2nd MP-2 never did sound the same as the first. I'm not technical by any means, so I can't tell you if anything had been modified inside, but I do know that I used the same tubes and the same settings, but never got that 2nd one to sound the same. It sounded good...but it wasn't the same. I traded it for a very nice guitar with a former member of the Depot, Randall Haney (R.I.P.)
Anyway...back to the point...if you like the sound of the gear you have, do NOT take for granted that you will be able to capture that sound with 'identical' gear. I'm not willing to take any chances, I'll protect it...but I'm only using 2 rack spaces, much more affordable. Cheap insurance in my mind (the price of decent combo amp - or a backup guitar).
You'll notice (in the pix below), I have no shock mount cases of my own (I don't fly with my rig, but if I did....)
If I were forced to fly with my rack, I'd take the 2u rack & use their backline. I have my pedals, cables, and mics in an old suitcase that nobody would want to steal (it cost me $6 at the thrift store, I bought two - have a backup). The amp shown is my Boogie DC-5 (50w 1x12). Just add guitars