It is actually pretty easy to decide. If in a panic and you pull your gun are you going to remember to take the safety off? Can you ALWAYS get your gun out of the holster with your finger OUT of the trigger guard? You not getting shot and the bad guy getting shot is WAY more important than the hassle of the decocker spring issues (that's why they invented gunsmiths.)
Sounds like you are under the misconception that you must actually use the safety.
If you keep the safety model SP-01 hammer full down or half cocked you cannot engage the safety. The gun works exactly the same in those two positions as the decocker model does.
So it is no slower or faster and there is nothing extra to do or remember.
The only time you can or would engage the safety is if the gun were being carried at full cock like a 1911 or if you wanted to make the gun safe while you were shooting it without having to manually lower the hammer. That is the real difference. Manually lowering the hammer vs using the lever to lower the hammer.
So as I mentioned prior, you just have more options available with the safety model but in reality it works just like the decocker model if that’s how you choose to carry it.
You can’t accidentally engage the safety either, it will only engage if the hammer is at full cock.