I don't think our low-key approach opens any doors, or if it does, not far. Our Mission Statement is in my Profile, it outlines what we do and what we don't do. With my wife's empathic ability, we even have a bit of "radar". If she ever picks up a really bad emotion when we drive up or even enter the building, we agreed that we wouldn't investigate. It hasn't happened yet.
That said, I was raised a Catholic though I'm non-practicing since age 14. But our team does have a case with holy water, a Bible, crucifix, sage, palo santo, blessed St. Benedict medals, a rosary and two blessed candles. We have never had to break it out, never even thought about breaking it out, hope I never have to. But it's there. If a former Altar Boy has to face-off with something dark, armed with but a box of holy trinkets, I'm ready for it. And my name isn't even Winchester.
I'm glad to see that the "party" approach doesn't get much, if any, support. I haven't liked those big whatever-they-are (they certainly aren't investigations as I understand them) since first getting my toes wet in this field. I've only been exposed to it for the last eleven years, was in my 50's when my wife dragged me in. A co-worker some 30 years ago tried to get me interested in ghost hunting, but back then I had no desire.
Maybe I have the same zeal usually associated with religious converts. I remember in my church going days growing up, nobody wanted to invite new converts over for dinner, because all they wanted to talk about was... church, lol.