Thanks! For Vass, well, let it be.
I would mostly take dark navy suit, as tried black & dark velvet last year for pre-wedding photo with my cat (coz he was heavily sick years old and I don't want to miss the chance for a proper photo with him) and it's urgh... too sharp for me. Plum, vintage rioja, burgundy, oak caught my eyes.
Somewhat will double-monk fits better for jeans?
Depends on the double monks but it would be rare to impossible to find one that goes from jeans to wedding day attire and looks good paired with both & everything in between. It's a bit like asking your hyundai to act as your work truck, sports car, & luxury car.