For me , the more why to do something along with the results of if you do or don't that I learn, the better to be inspired to do it.
Using spi epoxy the best ways possible does require more planning & effort than shooting some cheap quick dry stuff. While we all can't do everything the best way every time, it's not too hard to add at least 1/2 hr induction time into your schedule the majority of the time.
Are you the kind of person that takes advantage of knowledge and planning to up your results level or do you go through life half assing stuff. Anytime you can help avoid having to experience an issue, the better. But if something works good skipping a step, that's cool too.
Eddie, I have used mixed epoxy put back in a sealed container & kept inside my house for temperature control as long as 4 days later after stirring in some reducer.