There is no protection for any sector entry procedures in a racetrack. You do that in the holding pattern first, where the protection area is predicated on all 3 types of sector entries.
Note here too that if you use a sector entry that is not appropriate to your sector you may not have adequate clearance from terrain, adjacent airspace, etc. In practice, this probably won't ever be unsafe, but this will depend on how well the holding pattern has been designed, the speed you enter at and the amiunt of wind blowing at the time and, of course, the direction from which it's blowing. If it's designed for the highest Pans Ops speeds and wind conditions, it's hard to see how your aircraft would leave the protection area itself, but it may create another problem...
This one is related to lateral separation of your aircraft, at any point in the pattern, from aircraft on an air route that may be close to the pattern. In procedural ATC airspace, you may find yourself causing a separation breakdown by not being where you are supposed to be.
But all of this is quite different from making a sector entry in a racetrack procedure. Even using the correct sector earns you hero status in my book! To use the wrong sector entry is to be on track to receive the award posthumously.
The only way for such a manoeuvre to be a bit safe is if the holding pattern overlays the racetrack and if the racetrack commencement altitude is the same as the lowest holding altitude and if the racetrack has the same speed limit as the holding pattern and if you used a one-minute maximum timing for your sector entry rather than the usually longer outbound timing for a racetrack. Geez, there's an awful lot of "and ifs" in all of that.
Oh, BTW, yes I am a procedure designer. So,
Commander, I think it's safe to assume you've just used up one of the cat's nine lives. How many have you used up in other ways already?
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Once a king, always a king.
But once a nite's barely adequate!