Personally, I am very wary of the 'clear papers', as to make cellulose film, the process is a little... well, lets just say the precursor product, one step before its ready to smoke, is ready to go into rounds of ammunition... that's right, these are made by reducing nitrocellulose with acetone... Nitrocellulose is primarily used as 'smokeless' gunpowder, and has a natural green-gray color. The acetone completely removes the nitrogen compound from the cellulose, leaving behind cellulose film. The nitrogenous portion being reprocessed into nitric acid, and used to make more cellulose into nitrocellulose. Cellulose film, is used for many things, including sealing circuit boards via a solvent based solution. With just all the nasty toxic chemical processes that these have gone through (as well as most normal papers themselves) I avoid them personally. Also, natural cellulose film is not perfectly clear... it is usually very hazy, and opaque, but through heat treatment, and other refining processes, can be made clear. Cellulose film is being used in most biodegradable films and packages, along with several other 'natural based films' such as Chitin based products (think shrimp shell), gelatin based products, and cellulose actually being one of the older 'natural' clear film product. However, keep in mind that cellulose film's primary role is the OUTER lining of sunchips bags, and other biodegradable packaging, yet with food, it is never in direct contact. It is also used to line frozen dinner trays (ones using a paper based type board) marked as being biodegradable.
Cellulose film like this was first produced as 'safety' film, as original film reels were made of nitrocellulose (Inglorious Basterds anyone?). Cellulose films are commonly acetate polymer chains of cellulose, and thus actually technically considered a type of polymeric plastic, though it is not petro-chemical base. Thus saying they are not plastic, is quite a misnomer. When burning, these 'papers' will produce traces of acetic acid, due to the heating and oxidation in the presence of moisture (from air, and the contents of a joint), which can lead to respiratory irritation and damage, as well as oral sensitivity, bleeding, and also decay of tooth enamel. Even if refined to get rid of all acetone base chemicals, and using a none acetate structure, only other options call for use of glycerin as a binder... let me just tell you, that cellulose and glycerin in one package, containing these compounds in their respective ratios... is basically selling you a precursor to gunpowder... just add nitric acid and heat to 180 degrees F, and voila... double base powder... so if you really want to ingest more known carcinogens, and a known mutagen (from the burning of glycerin... which oxidizes into glycerol, then into some toxic compounds upon application of heat, not enough heat to burn and oxidize the toxic compund...) be my guest. The RAW brand transluscent papers are the only ones shown not to produce traces of the toxic chemical, due to their using raw pulp in the process.
Now I will only also use US made papers, and prefer rice and hemp based papers as they require the least amount of processing, and impart the fewest amount of carcinogens.
The two thing I will never use... clear papers, and wired papers...