I saw a re-stock today and the Hedi 30 Chelseas aren't narrow in the shaft like the old Wyatt Chelseas were, but look acceptable and should be fine with D02s, like the French 60 Chelseas are. I didn't try them, but could pretty much tell by the shape - they ramp up to a gentle slope, whereas the Wyatt Chelseas go up to vertical and then beyond, like a skateboard ramp that goes even steeper than vertical, so you get them sticking forward into the jeans pulling them forward - you'd have to stand leaning forward for them not to. It's like they stuck a flat shoe shape on a heel so it's tilted up. For some reference, my day to day jeans are AW 13 raw indigos, and have shrunk from washing and drying so have about a 15 cm hem, but still fit over the new Wyatt Chelsea in 45, they just don't look right with it because of being pulled forward due to the strange shape. I'm reasonably confident the Hedi 30s will be workable though, as long as what I saw today wasn't old stock and the new have been changed (didn't bother trying them as I have them arriving on Tuesday - will try on Wednesday and report back).
The Wyatt Chelsea being ruined for me in my size breaks my heart. Still glad I have at least one pair of them for day to day. People that wear smaller sizes should be fine though (saw a 42 on display and it looks plenty slim, definitely slim enough for 15.5 cm jeans.