Does that rub clients the wrong way when you spend an hour on the phone closing them and go "OK well good talking to you and getting your money, now talk to my assistant for everything from now on"

No. Absolutely positively 100% no.

I've done pure sales a lot. Way more clients than you have. When I get hired to do sales, that is a very specialized role. I can call 150, 250 calls every day without batting an eye. I have prospects I've talked with 20 or more times over a year, and gained their trust. When I make the sale, I specifically tell them that our service team will take over. If they're understanding of business, they'll 100% understand about what delegation is. If I had to service after the sale, there is no way in fuck I could do what I'm specifically hiref to do. I think what I do is very rare, and it would be a complete waste to have me talk to someone after the sale. However, I call them to see if they want extra shit later. They talk with me, and don't say, "Oh, now that you want more sales, now you talk to me again." Never happens. If it did, I'd be honest amd say exactly this: "Hell yes. That's my job."