I wish I had a Local Outlet carrying the Lomo films at the listed price, as buying off their website comes with a bit of a hefty shipping cost at the moment. Haven't used 800 yet, but it's a good idea with Medium Format and I am waiting on a Super Ikonta to arrive.
Did try Lomo 100 in 120 years ago and the results were nice. However, outputting hybrid through a lab, the consistency depends on how they interpret it. Have tried 400 in 35mm as well but some labs gave very "vintage" results so to say and the color palette markedly varied from modern Kodacolor. However, that is down to how it was scanned.
Is it actually different film? I assume Lomo 800 is manufactured by Kodak since there's no other manufacturer with this capability left. Do they coat an older version of their Portra 800 for Lomo, or a 'dumbed-down' version or something like that? Portra 400 with an 800 label/DX code stuck onto it? Is anything known about the actual differences?
Someone with tools that were able to measure/compare properly could give some insight.
From here on I'd like to speculate:
In general, 120 base thickness is different than 35mm and that should require some customization in coating. Someone noted that these films are now coated on a Polyester base.
That is far from clear - other than the fact that they don't have competitors. And much of the cine film production may be the intermediate films - not camera films. They also have growing volumes in their non-photographic Estar sales. If EK is making custom polyester films, (not photo films)...
www.photrio.com
The 800 could very well be Ultramax 800 (Kodak GT800-5) of some variation which in 35mm is only available for the disposables.
There was another thread about why Portra 800 is so expensive. Given a certain specificity, it's fairly logical to infer that they have at least a couple 800 products (Portra+Ultramax) and the extra cost of Portra manufacturing just stays for the professional product while they can produce Kodak GT800-5 for the disposables and Lomo.
A note about Kodacolor VR (the suspected product lineage) is that despite it being old tech, so to say, I do have a more technical question about it being pre 2000 where C41 was modified to remove Formalin in Stabilizers. In that way I would infer that at that point in time, coated film required some modifications for this, so it would preclude these products from being exactly the same as the 80-90s Kodacolor. It might not be a very relevant point however as the manufacturers have constant adjustments for component variations and such.
https://www.photrio.com/forum/threads/the-definitive-word-i-hope-on-color-stabilzers.89149/