Anas also produce the ovular bokeh and have a certain feel.
Part of the look you're liking is the Squarefront Lomo look - it has a bit more softness/cream/dreamy feel (especially at T2.8-T4). The larger Roundfronts are a little more precise and not as '70's' in feel.
What you should look for is maybe something like a Helios 44-M (58mm) F2 (in M42 mount) an old SLR lens - they're cheap (between $30-$50) and you can re-house to PL... it's basically considered as a copy of the Zeiss Biotar and produces a 'Lomo-esque' look and has a very nice 'swirly' bokeh (depending on taste!). It is, however, a very small lens. Advantage is it has click stops and a push-pull system to go to a smooth iris. There are many versions of this lens, so be careful to get the right one (the older version with long green f-stop markings). I presume you could adapt it easily via M42 to Canon (if you're using a Canon mount).
Another look would be to go the Lomo spherical route... this will also give you some of the soft/creamy feel you're looking for. Getting Lomo sphericals has become a bit of a minefield, so be careful as there are two types (OCT-18 and OCT-19 mounts) - both are being converted to PL's, but avoid the ones with small 'butterfly' sty;e focus mechanisms. These are the OCT-18 versions and you're not going to get a follow focus working on them (but they're OK for self operating).
Overall, part of the look you like is the nature of antique lenses but is also the sensor, the way the setup is used, the subtle use of the grade and the skills of the DP/Director (and crew).
In terms of anamorphic cropping, it's not so much of an issue on RAW cameras - but can be a PITA if you're shooting 1920x1080 on 2X - on a compressed codec. But there are plenty of nice things out there that have used this - check out Ryan Glover's Hillsgreen - using the same Squarefront anamorphics you like, but with an old hacked GH1 -
http://vimeo.com/18766884
I saw a post from Ryan here recently, so he might want to contribute.
Hope this helps.