I'm a fan of the TG73. A few years back, when the Deco last first came out, I ordered a pair, and found the Deco last felt narrower in the toe box, although I needed a 1/2 smaller as the Deco last appears to be larger/longer than the TG73. Dean and Tony were kind enough to complete my order by remaking the shoe in the TG73, although the Byron is a Deco class shoe. For some reason, the TG73 used on this Deco model looks way better than any other TG73 lasted shoe that I own, and is the best fitting G&G shoe I own.
If folks want a GMTO. May I suggest using the TG73 last, but on a Deco design...or at least up to Deco specs.
And there is nothing more beautiful than Vintage Rioja patinated to a Dark Margaux