I have never been in a strictly sales job, but I've done something that was quite close. I was a software designer in one project, with emphasis on co-operation with the client, and getting them assured that our product can meet their needs. I did my job wonderfully, and the one responsible for the sales (CEO of the small company) could do their job.
From my point of view, it helped to be
-moderate e, not going overboard with E
-intuitive, in that situation .. it demanded to see the customer's situation from a wide perspective and just see what kinds of things they would want
-a thinker who's not unfeeling
-a J, as I had to understand the customer's processes and what they want out of it. They wanted security, reliability and all kinds of J-orientated stuff.
so, I think that particular job had perfect match with my personality. I can think why other personalities might be particularly well suited for other tasks.
-if it's not that much about systems, but rather moods and style, F might do better
-a store that sells to professionals might do well with I salespeople, professionals don't want to listen to extravagant sales speech
-if there's less design involved with the job, and more pure sales, SP might do better.