The Pantera has a similar "air chamber" created by the location of the engine and transmission as the GT40's do.
It is much less likely to suck in candy wrappers, squirrel tails or road pebbles then a front engine car does.
The first time I heard the word "urchin" used was on an episode of "Firing Line" where Bill Buckley and Gore Vidal were going at it heavily as usual. I gathered that it was largely a Roman expression that was used to describe unfavorably non-Italians that lived in Rome and were grab and run gangsters.
In using it here once, it was taken by some as a racial disparaging remark against Italians. It has since been dropped from my vocabulary use list. For me, that's a difficult loss since my usable vocabulary is barely 100 words now as is?
It isn't just paper filter elements that absorb the "atomized fuel" it is the cloth fabric and foams as well. The foams don't even burn, the seem to just instantly vaporize.
The frustrating thing is that IDA's have been run on other engines with filters with no issues. The 911-s Porsche is a good example and there are bunches of Lamborghinis like the Miura S and Ferrari 365 GTB Daytonas that were built with them.
The significant factor here is that V8 engines naturally have a reverse pulse into the induction that a 4, 6. or 12 cylinder engine does not produce. I don't know about the 10's in the Vipers though?
When you have a single intake plenum with a single or even multiple carb induction on a V8, the reverse pulse is used to push fuel into the next charging cylinder. IDA's use an individual runner intake sysetem.
Incidentally, the first induction system used on the 69 Shelby Boss 302 Trans Am race car also used an individual runner induction system using two Holley Dominator carbs mounted sideways and had the same reversion issues. The dual Autolite In-line carbs using two on the same engine...same thing...reversion.
The Pantera actually has an advantage here with an IR system in that it has enough room available over the top of the carbs to use taller stacks to retain the vapor cloud within the stack. Very much like the GT40's in that respect.
The IDA was never conceived of as a "street production" carburetor. It was conceived of by Carroll Shelby in order to put on his Cobras so they could have the same advantages of those "Eye-talian" cars did.
They were financed by Ford and built for Ford by Weber. That continued with a very limited set of 58 IDA's also built for Shelby to run on the Mark II 427 GT40's to "beat Ferrari's Ass" at Lemans. The big ones never quite worked out though probably because of this reversion issue and are now VERY valuable antiques and collectables.