You can do this. It’s not that different from Chanel RTW. Just shop with the person you feel most comfortable with. When I started in 2008, I shopped both madison (my home store) and Wall Street (the fun store), and eventually settled on Wall St until that SA left. Now, im back at Madison (it turns out my current SA knew my former one), and the right SA can make shopping easy and enjoyable.
@luxurylover3 , if you want mens RTW or made to measure, you‘ll shop on the mens side Bc that’s where the merchandise is. For small leather goods, homeware, and other categories, shop womens. When DH wants something from mens, we tell our SA and he meets us there. If you are picky about SAs (I have a preferred SA personality type, and tend to go by personal referrals), perhaps check out various stores and see if you click with anyone in particular. It’s possible to consolidate shopping on both sides, and men certainly get QBs. I think the past purchase history should be in the system (I stopped shopping H with a long hiatus when my first SA left, and when I resumed years later, I believe they asked if my billing address was the same)