I am having wonderful luck with this potting material.
I have repotted about 70 plants now over the past 3 months.
Most of my plants are catts species and hybrids.
Make sure you have pre-soaked in KLN to promote new root growth.
Also, I purchased some seedling mats which have made a world of difference in the number of roots and "happy looking" leaves.
I do not have any c. nobilior but from what I understand, you should anticipate good results.