do what you want, apparently a big debate, but ill be willing to say that most people that have experience in cams and lifters will tell you that setting your rockers 1/2 to 3/4 past 0 with dry lifters, when they pump up from engine being run and getting warm, you'll be re-adjusting them.
read comp cams facts page. they stipulate that any roller lifters and roller rockers should be rebuild or replaced after 1 year of use.
Now how is it that Chevrolet, ford and Chrysler among all others who use roller motors can last 200 to 250,000 miles without problems, but comp cams products requires there products to be replaced.
knowing how comp cams and other large companys operate, i'd rather follow advice of 1000 peoples who do this occasionally for the past 20 to 40 years than a company who's purpose is to make a sale from you