Bring on life history DFR's.
It really is a brilliant idea. If there is one person operating foward slips and trying to justify it, then there is probably ten or more others doing the same.
No I have not flown in Central America, just a little country we call Papua New Guinea - short one way jet strips at several thousand feet and Wellington in NZ can be fun on good days too. Sorry not a pi*** contest but I would suggest things can become local SoP's but that doesn't mean they are good airmanship (whatever that means).
Personally I would not wish to fly or buy an aircraft which has been pushed harder than required, as an SoP. Fortunatly my ops generally buys new aircraft and we fly in a reasonable conservative world.
Cheers
My best to the Kids