Well, the heel brakes do take a little familiarization, especially if all your tail dragger time is in Cessnas with toe brakes.

And, I must say, I prefer the toe brakes. I recommend some practice on an open ramp or pad before your first flight, for sure. It doesn't have to be "high speed", but you need to determine how hard you can turn before the detent drops out and releases the tail wheel. You definitely need to use the brakes for short radius turns on the ground and to hold against a stiff cross wind while taxiing.
However, I didn't find brakes necessary for takeoff (or landing) at all. I have a Matco tail wheel with detent and it has a direct (with springs) connection to the rudder up to the point of detent release. And on takeoff you can easily keep it straight with the rudder/tail wheel combo for the short time until you are flying (and I mean
short time). It will accelerate to flying speed in just a few seconds and you will be off the ground.
On landing I can keep it rolling out straight (with little or no crosswind) with the rudder alone. With crosswind conditions there will be times when the brakes will be necessary to save it (I've done that many times in the Cessnas of my prior experience, i.e., 120s, 140s and 170s) and you will need the skill to use the heel brakes. BTW, I think the heel brakes are common to the Avid, Kitfox and Ridge Runner as well. I checked out in a Super Cub (way back) and it also had heel brakes.
So, bottom line is, get familiar with the heel brakes, but that is easily done and not a big deal. Otherwise, the SR has no peculiar bad habits, that I am aware of, and seems pretty conventional in all respects.
Joe