Hi! Have anyone tried to swap blades between Mini Griptilians? I was looking for a 555-1 for a while, but I had no luck. I have a 555-s30v now and I really like the opening hole. But the G10 handle with the open back is tempting so I was thinking if the blade would fit into 551-1? I have a good deal for one and I was thinking I might be able to combine them if the blade has the same shape around the pivot. Thanks for sharing any experience!