Yup... even when I went with my girl to buy her 99 Accord V6 at Keeler Honda (also has a subsidiary BMW & Mercedes Dealer next door) they were more than helpful than Acura.
We rolled up in her mint 325i, they gave us the keys to the S2000, and the Accord and were more than helpful. Aside from selling the Accord we told them we would buy the next morning (promised me we didn't need a down payment to hold it) they happily found the same car w/ same options, w/ less miles and $1000 cheaper for us.