MC, I initially used this film for two reasons, firstly, I had never used or seen it before, secondly, it is very cheap.
Four rolls of 36 frame Lucky, didn't cost as much as a single roll of Ilford FP4+, which is a pretty impressive reason to give it a go.
That said, my current main 135 film, is Neopan 400, a couple of years ago I had around 350 rolls of it in bulk, I'm down to about 175 rolls left. Fuji has deleted this film in bulk, so I will not purchase it again.
My next preference is Ilford FP4+ which is still available in bulk and will I believe, always be available in bulk.
The Lucky film has a double difference from most B&W films in it's grain and not altogether effective anti-halation layer. If you have a dark (ish) background and a subject either dressed in light or white clothing, or has light hair and skin, you will see some quite interesting flare.
This flare coupled with the obvious grain is quite interesting and different when enlarged a bit, especially if enlarged around the 20 to 30 times mark, with a section of the negative being the picture.
I can remember in the sixties there were some interesting pictures of models, buildings and things like that, with incredible grain. Since the demise of golf ball sized grain in most B&W films, this is the first film I have used which can do this for me.
Those are the two main reasons for using this film.
Generally, I am after very fine almost unnoticeable grain structure in film, Neopan 400 does this better for me, than any other conventional B&W film I know of at a 400 ASA speed. Ilford FP4+ does this better for me, at or around the 100 ASA speed.
Mick.