Epigenetics and Lamarckian evolution are not mutually exclusive with natural selection, even historically. Lamarckian evolution is natural selection, simply through a non-genotypic mechanism, which epigenetics could be a part of.

Also, the heritability and stickiness of epigenetics is still not well known. It cannot be the main driver of evolution over long intervals (i.e. hundreds of thousands of years) because it is limited in the changes it can make: methylation, for example, can only affect the expression of genes, but it cannot alter them, nor can it introduce new genes.