I have the semi-spot attachment for my Gossen Lunasix F, but I have rarely used it. In my view, if you meter enough spots, you have basically performed a manual averaging metering.
I use incident metering for almost everything, if I use a handheld meter. I still shoot a lot of slides, so that's how I've gotten into the habit. I meter for the highlights, and I almost always carry a flash to fill in the shadows - to get them into the film's range.
I have been familiar with my Nikon F3's meter pattern for 25 years, so I can rely upon it almost without fail. Lately, I have migrated to using a Nikon F2 with DP-11 prism, and the slides look fine also. People may pooh-pooh the center weighted metering on these cameras, but for the large majority of photographic situations, they work just fine. With the F3 in auto mode, I can keep up with fast moving subjects, or mottled lighting.
I'm still learning the meter pattern on my Leica M7. It seems to be a big spot pattern. It needs more exposure lock than what I've needed to use with my Nikon F3. For a fill flash lover, the TTL modes of the F3 and M7 are great.