I thinks it's gotten more of a resurgence with dermies since mohs got slashed.
From this website:
http://mdsalaries.blogspot.com/2006/05/dermatologist-salaries.html
"A dermpath can look at 100 slides a day charging about $75 each. Thus revenues can approach 2 million per year per doc. And typical overhead is about 30%."
So I did some math if you looked at 100 slides a day, $75 a slide, 4 days a week, 48 weeks a year (1 month vacation), gross $1,440,000, 30% overhead, net $1,008,000 a year. Not bad working 4 days a week. No wonder all those path guys are so hard up for a dermpath fellowships.