The current APB split scimitar is a modified blended winglet.
When you receive a scimitar winglet you return your old blended winglet which will then get reworked and sold to another customer. This is also reflected in the list price the scimitar upgrade only cost half of what an initial blended winglet installation does.
Program List Prices | Aviation Partners Boeing
The new 737MAX is using a completely different type
I was also surprised to see how many airlines in the USA using them, the only airline I can recall seeing in Europe with them is TUI.