As Pangkievrange notes, the 5 is pretty much the same as the 4. I do use the lever and have had no difficulties with it. I also only use standard 35mm cassettes.
The meter is operated similarily to the one on the Kiev 3, though it is a bit more sensitive and only goes up to Gost 250 however the meter continues to adjust beyond there. I have found by comparing it against my VC Meter II that if you line up the arrow with the 0 in 250, you can meter for ISO 400.
The only problem I've had with mine is that the self-timer doesn't work. And I really wish they had run the rewind lever up through the center of the light meter knob as it's location on the side can be a bit awkward when trying to reload quickly.
William