You can use these tips with either system . It is not needed to soak off after a while but I do find it best to rebalance using a cream or white french to 'hide' the smile line of the raptor which has grown up . Hope that makes sense .
We stock Raptors as well as Lotus tips and gator .
the white raptors are PRE ETCHED if that's what you mean - no need to pre blend (although you might need to pre tailor the tip). You shouldn't need to soak off to reapply new tips - only if you haven't perfected a forever french rebalance.
place them where you want them!
use pinching tongs to ensure the 'ears' are stuck on properly. you can then apply clear/natural/pink l/p gel etc.
i use the clear and natural well-less tips too whenever i can - saves time on blending.