Thinking of moving some crypto into tradfi? Any exchanges recs?

I've currently got my crypto positions spread across kraken, coinbase, and bydfi. I'm thinking about add Tradfi like gold or oil into my portfolio and noticed they all provide such assets.

Does anyone here use these platforms for

both(crypto+tradfi)? I'm curious if there's a learning curve when switching between them. does trading a stock or commodity ""feel"" different in terms of execution or price action compared to just swapping

cryptos?

Also, for those doing both, are the fees better on one versus the others? Would love to hear if anyone is managing a hybrid portfolio like this!