I really think the companies are trying hard not to make Grip knock-offs, but you also have to keep in mind that a Grip knock off is anything that looks like a back pack. Grip "stole" the standard back pack design.
The only bags that don't look like Grip knock-offs don't look like back packs. For example, the Simian.
Looking for: |Yellow opaque lucid trespasses|yellow opaque lucid escapes|Unique colored giants or xXx| White Saint Pros|