For sure. I'm talking 20-50 SPX contract spreads, where the desk is death. I think the smaller size and the fact that they're spreads are a factor. Also, the electronic SPX market is just really efficient, I pretty much always get the mid or just off mid there if it's a true mid and within a reasonable distance from the current market, so not much a desk can improve unless you want to move really big order without impacting the market.General idea is that you can get an improvement if you put the dealer in comp with other dealers (ie you are covered by multiple desks directly). If you get your execution process well figured out, you can literally trade at mid every other time.
PS. I realize that my experience is not applicable since the dealer would not be quite as “friendly” to a smaller account