  Although the theoretical set-up of TMD evolution appears to be well
established, its phenomenological implementations still require special
attention, particularly as far as the interplay between perturbative and
non-perturbative contributions is concerned. These issues have been extensively
studied in Drell-Yan processes, where they seem to be reasonably under control.
Instead, applying the same prescriptions and methodologies to Semi-Inclusive
Deep Inelastic (SIDIS) processes is, at present, far from obvious. Some of the
controversies related to the applications of TMD Evolution to SIDIS processes
will be discussed with practical examples, exploring different kinematical
configurations of SIDIS experiments.
