I didn't answer your quirks question but after listening to NurseDave's responses I meant to list a few of my own.
Here's a quick list-
I prefer to wipe my razor on a sponge rather than rinse it in the sink water (filled so the water doesn't run). I don't want little whiskers floating in the water I am going to splash on my face.
I rinse my blade (or DE,SE) with 90% isopropyl immediately after rinsing in water.
I have begun to rinse my brushes with isopropyl too, I find it leaves the bristles softer and has stopped the funky smell from being an issue.
I can't lather part of my face and shave it, I need balance.
I do a nightly lather up so my morning beard is really ready for the shave.
I agree with your assessment of Fine aftershaves. I like/prefer that style of aftershave to the watery feel of some or the sticky feel of others. I don't like balms but will use them at night after my lather if my face is dry or the air is dry. My mind has trouble spending $20 on fine, at $15 I felt just fine (pun?) purchasing it but at $20 I feel like I am spending too much. As my stock depletes I am likely to replace with Stirling aftershaves, they are typically a good value and I am ok with the feel. For years I have made my own witch hazel post shave (not a CBL soap thing, just a personal thing) where I mix WH half and half or 60/40 with 90% isopropyl to get the alcohol kick, I mix in a bunch of menthol and a little bit of alum, glycerin and castor oil and I am good to go.
I used to stress about matching the soap with the aftershave and or cologne but my ability to match scents is as bad as my ability to match my shirt with my pants. Earlier this month I decided to not even try to match soap to post shave scents, the shave is one experience the post shave scent is a new one. You would not believe how that has reduced my stress level and open the door to using more soaps. I have a ton of stirling that rarely gets used because they are more eclectic scents without an obvious AS match (unless you get the matching AS). Now I don't feel restricted, I can use Electric Sheep or Texas on fire without worry.