ORIGINAL: -pkh-
You can snip the tab off of the Futaba connectors, and then they will fit into any other brand of receiver.
But don't slip doing it.
Or you can simply buy servos that don't have to be modified to use.
But if you've already got 'em, razorknife and go. But go carefully with the knife. Too much and the connector on that side could be a bit of bother to plug in as it'd have nothing supporting it to the side.