I don't know of any sites other than those you mentioned, but there are lots of first-person reports of tactics, in the archives of Lactnet, the list for lactation professionals.
Anyone can search the archives at
http://community.lsoft.com/archives/LACTNET.html
I suppose you could use search terms like "salesperson" "rep" or the formula co's names.
NABA and INFACT Canada also publish a report that summarizes the tactics.
http://www.infactcanada.ca/infacthomepage.htm
The National Alliance of Breastfeeding Advocacy (NABA), USA
www.naba-breastfeeding.org
this is the report:
Selling Out Mothers and Babies:
Marketing of Breast Milk Substitutes in the USA
http://www.naba-breastfeeding.org/resources.htm#
Janice