Certainly not a cue maker myself, but I have made this very request and not for any devious reason. At the same time, I suggested a small logo or other less conspicuous marking would be fine by me. Understand that anyone would be proud of their work and perhaps want to sign it, but some buyers value the look of the finished piece of art more than a sometimes poorly done signature.
I mean to offend no one but some of the Filipino makers would do very well to eliminate the gaudy signature from the forearm of their pieces. The beautiful woods and workmanship don't need to covered by a signature. A small and simple logo would be more than adequate to identify the maker.