The thing I find interesting is... how did anyone ever think that "Poirot" could be taken seriously as an arch villain??? Awesome actor but... all I can think of when I look at him is "Poirot", and I'm sure I'm not alone.
Before the fall of the Soviet Union (1991) and even for awhile afterward, it was not straightforward - or even possible - for most Hollywood armorers to get their hands on Soviet/Eastern Block weapons. It seems kind of hard to believe these days, given that the whole world is awash in them now (subject to local legal constraints) and the semi-auto "AK-47" even has a plausible claim to being "America's favorite rifle" these days (I'm sure the title goes to the AR-15, but there is a case to be made there).
One of the "famous" examples of this is "Red Dawn" (1984) where they had to fake-up the Soviet weapons from available starting points: Walther PP for Makarov PM; (Finnish) Jatimatic Sub-machinegun for Polish PM-63; Egyptian Maadi MISR's (converted to full auto for the film in addition to being mocked-up) for AKM and AK-74; Valmat M78 for RPK; M60 for DShK and Goryunov; 1950s era RPG-2 mocked up as RPG-7, etc., etc. and even an Aerospatiale Puma mocked-up as a Mi-24 Hind.
The Eastern stuff just wasn't available for the most part, unless it was 1950s or earlier vintage. I think that goes for the Vz.61 Skoprion as well. This IMFDB list seems really incomplete, but it still suggests that, pre-Soviet collapse, getting military weapons out of Czechoslovakia (or any other Eastern Block country) was not all that easy, and certainly not easy for something like a Hollywood film. Oh, how times have changed. You can order them by the shipping container now... provided you've got the right paperwork.
http://www.imfdb.org/wiki/Skorpion_SA_Vz_61
One other point... the Vz.61 (or other variations of the Skorpion)... is it a clear "bad guy gun", "good guy gun", or neutral.
Some guns are clearly "good guy guns" in film land: Colt Single Action Army, Winchester lever action rifles, M1911A1, M16 (especially fixed carry handle models), etc.
Others are "bad guy guns": P08 Luger, C96 Mauser (Han Solo and Luke Skywalker excepted), P38, MP40, the entire Kalashnikov line (except in recent years, where it has start to morph into a symbol of resitance even in the U.S.!), etc.
The Vz.61 Skorpion seems like it should be an obvious "bad guy gun", but when you look at the list: Leo in "Body of Lies", Keanu in "The Maxtrix", etc., maybe it is a neutral???