I think traditional setups can work if the division of labour is equal, in whatever way that pans out for the couple. Where friends may be concerned (perhaps unduly) is if they perceive an obvious unfairness to your situation. For example, as you’ve said both of you work full time, it’s largely irrelevant if your husband earns more when it comes to domestic labour unless his job is much more demanding and stressful than yours and translates to lots of extra hours and mental load than your job.
So I suppose one question in friends’ minds may be whether or not his domestic contributions are equal to (which doesn’t mean identical to) yours. I’m not making a judgement because I can’t know, but as an example, unless your finances are very involved, then I would think it unlikely that managing them takes as much time as the cleaning (just to use my earlier example). But overall, things may well balance up very well in your relationship. Having said that, I’ve come across traditional setups that in reality often mean the woman is bearing much more of the load. If he is doing all the DIY in a complex older house, regularly maintaining an unreliable car, managing a range of bank accounts and investments, working hard to maintain a large garden, organising all tradespeople and taking a lead on planning holidays, while you cook, clean, do laundry and shop, then that might well work out as fair. If he’s just making sure direct debits are set up and the odd DIY job is done, but frequently buying you flowers and chocolates to make you feel ‘appreciated’, then lots of people might feel uncomfortable or concerned about their friend in that situation.
Where I do think traditional setups can be problematic (even with a fair division of labour) is if they extend into attitudes that disadvantage the woman, e.g. a belief that because the man oversees the finances, she shouldn’t have input into major financial decisions. I would personally feel uncomfortable with that (just as an example) for any friend.
Assuming your situation is the positive version of the above, your friends may be surprised at your traditional setup if you’re quite young, but I don’t think anyone would feel jealous of this setup specifically. A genuinely equal division of labour can take many forms and I think people would only potentially be jealous if their version of labour division is not equal or they are treated badly by their partners while your situation is great.