Scottoiler, ignore the naysayers,
There are downsides to scottoilers too although no doubt they are good for chains.
I have lube all up my back on most of my clothing and and sometimes on my tyre tread.
Anyone who tells you to ignore any bad points is biased.
You should look at both the pros and the cons before coming to a decisions.
Mines leaking at the moment, so the Scottoilers themsleves do need some maintenance themselves and set up and adjustment, although I would totally agree they are great for chain longevity.