Myfonts offers most fonts in both TrueType and PostScript format. My question is does this refer only to the desktop use of the font, since I don't know how a PostScript font can even work with "@font face"?

 

In other words, are their web embedding kits the same (with cross browser support) regardless of type format choice?

 

For an example just check the "Buying choices" panel of any random font they sell.

The original desktop format "influences" the webfont product. All webfonts will give you the same set of web-safe formats, but the character set will be determined by the original desktop font. For example, you'll get more characters in a webfont based on a multi-language Pro font than you would from an old Type 1 package.

Thanks for the info