From the photos the top tube looks quite slack, so at 175cm tall standover isn't an issue? One thing I notice is the BB to fork distance is quite wide at 600mm, even the XS is at 587. I'm guessing toe overlap is less an issue with this frame geometry?
I'll admit I didn't give standover height much thought, but it hasn't been a problem. I'm sure I would've noticed if it was!
And definitely no toe overlap. Though I'm using 34mm slick tyres (measured width, haven't measured the height). Maybe 47c knobbly tyres could cause rub?
Though I'm thinking it might be time to retire this frame with something that has progressive gravel geometry.
I'm definitely no gravel bike geometry guru, but I think "progressive gravel geometry" essentially means "race-oriented gravel geometry"? The G056 is no slouch, but there are definitely racier gravel frames out there. Maybe the Spcycle G068 that has been mentioned in another thread, though I find that frame's geometry baffling.