Unfortunately, no. Blender’s default DAE importer dies on Gearbox’s DAEs, and since the DAEs that the exporter in the Blender toolkit spits out are designed to mimic that format almost exactly, Blender can’t read them in again. Only workaround right now is to convert the DAE to an FBX and then import that into Blender.
Someday maybe I’ll have time to really dig into figuring out xml parsing and also creating meshes using Python commands in Blender and write an importer, but I don’t know when that’ll be.
Of course if anyone else wants to take a crack at it and contribute it to the toolkit, that’d be awesome.