I agree the shape of the EGW one is horrible, I haven't been building long enough to see one fail but I like to learn from others that have.
My gripe was those saying they flex and that eats main spring energy, but when you stack springs the second spring doesn't eat the frist springs energy they both release their stored energy together, every explanation I have seen is someone explaining it as if the strut was un-stressed prior to the the sear releasing, and that drives me nuts.