I agree with the other here. Closed end holster if at all possible and the less oil used the better.
I'm also a Gunzilla convert. Cleaning gets easier after the second or third time using it on a weapon. It doesn't get as dirty when you shoot and it cleans up much easier. I pocket carry a lot and I have noticed a huge difference in my lint problem...I don't have one anymore.
I thoroughly cleaned my S&W 442 Thursday after a range session and I've pocket carried it for 2 days. I just pulled it out of my pocket and there's not a spec on it. Before, when I used rem oil, it would have been covered. My guns were like lint rollers for the insides of my pockets. Now, clean as a whistle.
While "Gunzilla" usage seems to be the conventional wisdom today, I'll just note that for the past 40 years I have been using a lube & rust preventative product that was developed for our US Navy in 1944 & designed to protect all metal surfaces from corrosive salt water, other POLs, & the dreaded rust. That product is called "FLUID FILM", which I have found to be far superior to anything that I have ever used in the cleaning & maintenance of all my firearms. Its lubrication & protective properties are such that I have had no malfunctions in any extreme environment I subjected my weaponry, and its protection last for many months....and the best part.....it's cheap & can be found on the shelves of any John Deere Tractor & Farm Equipment Dealership.