Making a lifting handle for a bike would be easy.! I wouldn't consider steel pipe due to the tight radius' required. Both would likely require the two bolt-tabs to be welded and few have welders, let alone a method to bend. Steel "Tube" may be too thin. Farming this out will Co$t.
I have made a folding handle using a 3/8" universal joint for the folding aspect. A foam sleeve over a piece of pipe makes a comfortable handle.
But, for those that want a OEM style custom handle that will fit over aftermarket shocks, this is my suggestion:
Get a piece of 1" thick aluminum the length and width to suit your pattern. A CNC/Machine-shop/Fabricator would be a good source. Transfer the top-view pattern to the material, cut it out on a band-saw, drill the two bolt holes and go at it with your files. Polish, paint or powder-coat.
Those that can fabricate will understand. For this project, aluminum is easier to work relative to steel and I can see this being completed and mounted in about 4-5 hours, depending on your choice of finishes.