I have to confess, Hammer, that if they made a 76 T3, I would be VERY tempted...
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Bottom line for me about cases is, at $3500+, and little chance of a standby T3 locally in the event of a catastrophe, I wouldn't dare cart around something that expensive and fragile in a soft case. After having spent all THAT amount of money on an irreplaceable part of your show, a hard case with wheels (which still avoids the need for much lifting) would be the only thing I was not constantly worrying about. Speakers fall over in cars onto cases... People crash into you... A well meaning 'helper' at a gig stacks a speaker on top of your soft bag...
It MIGHT happen. Are you prepared for the eventuality (I would say inevitability
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)? Do you have a backup T3? Will a local store lend you one for that night's gig? If not, think carefully before you buy something that only cosmetically protects your $3500 investment in your show...