what oil for daily fork tube lubrication?
"Slick Honey" is actually a grease, not an oil. It will be applied to rubber seals which get in touch with the tubes and thereby with dust, mud, etc. The Rock Shox 5w/15 oil is maiused inside of the fork but also for the (foam) dust wipers within the rubber top caps of the fork.

Anyway. 
Instead of "Slick Honey" you can also use "r.s.p. SlickKick Grease", "SRAM Butter" or "SRAM PM600 Military Grease" for service according to service intervals.
If the fork does not run smooth you could apply a bit of products such as "Finish Line Max Suspension Spray" after bike wash – but there are mixed opinions on stuff like that.

Personally I try to keep the tubes clean, wipe the off after every mud/dirt ride. If there is a week of heavy riding ahead, but last service is not too long ago, I sometimes apply 5w/15 oil on the tubes: http://enduro-mtb.com/en/how-to-the-quick-suspension-service-after-each-tour/

Happy riding!