As a matter of interest I would like to point to Adobe's own KBase how to save transparent TIFFs.
Documents #s 310805 & 319668
All you have to do is copy (or copy merged if it is multy layer) your original document with the BG turned off. Create a new image with a transparent BG and paste you image in. Save image as TIFF. Click the keep transpareny option. PS will warn you not all SW will recognize this, just click OK. There you have it, an image with tranparency built in (that can be gradieated {if thats a word} as well), with NO clipping paths.
On a second note, to anyone that says JPEGs are not high enough quality for print work I say try this.
Take a TIFF, 30-50 MBs outta do, save a copy as a JPEG at 100% quality with BASELINE compression and NO optimization. Open these 2 files side by side and TRY to tell the difference. The only difference is the JPEGs file size will only be about 15MB instead of 30-50MB. Get everyone in your office to start saving their images in this fashion and your IT guy will kiss you for it. I mean come on, 1/3 the file size, less badwidth on the server, and faster backup times, WHEY wouldn't you do it.
My 2¢...
Good day all..
joesim, over and out...