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Their 37lb, 44lb single tank wings and doubles wing comes with the inflator with metal buttons and you can order one separately. Inflator with metal buttons - SubGravityDTD BP/W is sold in the USA under the brand name Sub-gravity. I have the same system with a 30 lb (14L?) wing. All the components are identical to mine except for the color and the LPI valve. They’re both Italian-made, but looks like DTD has metal buttons. I can’t tell for sure. Also, SG has bungee loops on the wing that secure against “tacoing”.
Edit: Sorry, resurrected thread.