Hallisey Law & Mediation, P.L.L.C.Logo Design Contest

We are a law firm proviiding general legal and mediation services.

We would like to use blues, greys, or perhaps black; we might consider gold/yellow.

No orange or red.

No gavels or scales, please.
P.L.L.C. must be part of the logo; however, we do not want it to have a prominent place in the design.
The logo will be used in multiple print media; while it will primarily be printed in color, it will also be printed in black and white and greyscale. Therefore, the design will need to be easily converted from color to black and white and greyscale and retain its impact as a logo.
When we have tried to design our logo, it has looked "flat." We would like the logo to have some dimension without going overboard on shadows and bevels.
We know that the "danger" with professional firm logos is that they can begin to look the same; we recognize that their are limitations with professionals' names and initials. Nonetheless, we are looking for a logo that differs from a "typical" firm logo..