Any special reason why you want a facsimile of your physical signature on the return?

With Notice 2004-54 and Notice 2007-79, the IRS already established that preparer signatures "by means of a rubber stamp, mechanical device, or computer software program" are acceptable. This also includes "the individual preparer’s printed name", which most use these days.

Facsimile of your physical signature is not any more superior or acceptable to the IRS or your client, for that matter, other than perhaps in terms of aesthetic.  If you must, you can always add your signature to the PDF using a PDF editor outside of PS.