mgTFThat is a crazy and dangerous procedure and should not be in place on any of your fleet regardless of manufacturer.
In a co-ordinated TCAS RA - YOU may be the one getting the DESCEND DESCEND command , which you wont get if your on TA only, secondly if you get a climb RA at the max certificated level of your aircraft you will still have a (small) maneuver margin ... but its still better than hitting the other aircraft, even 50 ft will give you some separation (TCAS resolves in 25ft increments)
Look at TCAS
Update event 5 and 6
In conclusion.....if there is some doubt of the ability to respond to a “Climb” RA, at least remain level, do not descend.