Motif Applique Advice

I am busy making different crochet appliques for people to sew onto things. I see that most sellers darn the ends in but if I was to buy them I would want to be able to sew them on in the same colour.
This is to those that mainly buy them. Do you prefer the ends sewn in or leave them long so that you can sew them on.

I would personally prefer them left , precisely for the reasons you have said. If not required they can easily be sewn in. |Its nice to have the option.