^Holy shit man, 25mg? I only needed 15 to get very uncomfortable, and at the time I was into dosing three tabs of LSD or an eighth of mushies at a time. Dip your toe in low the first time. 4-ho-met was the closest I've come to entity contact. Creepy contact...
I'd have to agree with you here regarding entity contact and overall a creepy vibe. I'm probably fairly average when it comes to sensitivity of metocin, I have to take around 25mg to get a +++. The visuals I get from metocin are mainly open eye, very obvious 'bending' off objects that your eye isn't focusing on. However, I consider clear CEV's a less common thing for me on metocin and I can't put my finger on it but there's usually a sudden shift in my OEV's that give me the hint I'm having closed eye visuals at that moment. The most obvious CEV's I can remember was a metallic like tribal faces (similar to the UrSkeks from the Dark Crystal!) made of shiny metals like gold, bronze, silver surrounded by rainbow twirls and tunnels worming its way around. I find metocin to really project a sense of metallic rainbow shine around objects.
Metocin alone can create the most stunning colours and crazy warps, but I find cannabis potentiates it the most by far out of any psych I've tried... It suddenly projects you into a tunnel, in which your eyes can see through either end of the binoculars zooming in loads and also out having little control of it. I have 2 mushroom posters in my room and whilst sat on my floor staring at the visuals on my projects, these mushrooms turned into dancing men with mushroom heads, if I tried to look at them they'd disappear but they were there for around an hour I was peaking that night, I'll never forget that, funnily enough I've tripped there a couple times since and they've never returned ;(
The closest encounter to entity contact I had was on metocin, I would still only describe it as a deep +++ but as I was cycling through fairly present CEV's it was as if they all suddenly vanished into a dark background and suddenly bigfoot was infront of me. He was stood in the classic pose you see in pictures but was looking at me as if I was camera. We each had enough time to notice each other, as if he was saying 'what is this guy doing here in my world? he can't see too much...' And then ran off, I didn't see him 'run', but his image was taken from my view bolting right. This probably was only a 1-2 second moment but felt much longer imo.
Regarding the creepy vibe, I've found that mainly in OEVs. times when I have looked deeply into objects like candles flames I've felt like I've seen ghostly like presences and they 'catch me out' whilst I'm inspecting whatever. I haven't been scared by these things but you could describe it as creepy.
Overall, I'm a huge fan of metocin. I find it can be mixed very well into other psychs to tailor the trip. 25mg + 0.5g liberty caps, surprisingly changed the trip a lot, becoming much more meaningful, emotional and a mushroom influence on the visuals. 20mg + 60ug LSD, was just crazy visually speaking, patterns overlaying immensely and becoming extremely colourful with that LSD aura around objects + very racing bright CEV's.