I've used it all along (I'm in Croatia...) for all kinds of stuff: from 35mm for "Leica-style" street photography (gritty, large grain in Rodinal with ASA100 using rotary processing), to 120 format with a Rolleiflex and other medium format cameras (Efke R25 is great for outdoors/landscapes with yellow or orange filter, very sharp), to portraits in large format (4x5 and bigger)...

It's a film like any other, there's no "special purpose" that it should be used for. Shoot it before it goes bad

If you want to do a project with it, go ahead... I'd just recommend using Efke R25 (you don't say which format you got) for shots requiring high resolution - it's a nice film, once you learn to "tame" it I find it delivers nice results with Rodinal.