Just remember a) it gets dirty, b) it's tiny, c) it's hard to focus, d) it's backwards and e) WLF are kind of pricey for what they are. To get over a and e, just pop your prism off and use the "built-in" finder in an F, F2 and F3 (F4 and F5 need a head to meter I think, but the F3 not only works, but meters, without).
I owned a DW-3 for an F3 at one point. It (the viewfinder) saw little use, but it did it's job. I prefer eye-level myself, unless going with a bigger format with an appropriately-bigger focusing screen.
In fact, unless you have a ton of Nikkors or you can't do 120 for some reason, I would go with a Rolleicord or some medium format SLR with a waistlevel finder option. I think you might like that better. If you have to get a 35mm, I'd say Nikon will have the best support, lowest prices and the most fun accessories (over, say, a Minolta XK or Pentax LX... a Canon New F-1 would be close to the Nikon, though)
Now if it's a "fear" thing, you could always just "nut up" and shoot with a camera to your eye 🙂. I admit, there is some fear to walking down the street shooting at people. It just takes practice (I have a bad case of social awkwardness... a couple of years ago I was terrified to even talk to people on the phone, and today I knocked on the door of a house where a guy's stepson shot him the day before). You would honestly be surprised where a smile and a "I'm supposed to be here" persona will get you... trust me on that one 😎.
But yeah... a $49 meterless F2 and a $49 DW-1 from KEH.com would work for what you want.