LDView has no problems at all to show L3b-files directly. You only have to chance from ldraw-files to all files when opening those files.
More complicated is the matter with models with have beziers (like hose or belt) in it. These are only in SR 3D Builder visible. When openinig such models with LDView you will get error messages for each bezier.
More complicated is the matter with models with have beziers (like hose or belt) in it. These are only in SR 3D Builder visible. When openinig such models with LDView you will get error messages for each bezier.