It's still early days but I think Dean Smith is a bit similar to Rowett in terms of reputation (obviously their styles are very different).
They're not bad managers for the Championship but seem to thrive at smaller clubs with lower budgets, rather than the bigger teams with more ambition; i.e. like Hodgson is in the Premier League.
If they lose Abraham he is irreplaceable, it would probably be worse than Gayle leaving us in terms of impact.