I wouldn't use [init].  The same functionality is available using [loadbang] connected to a storage object ([float], [list], message box, etc.).  And [loadbang] is available in all versions of Pd, so your patch will be more portable.

The [init] object's args make patching _slightly_ easier.  The inlet makes it more expressive, but a subtle feature of [loadbang] is that it's easier to spot because it's always at the top of a chain.  Also "init" as class name is problematic-- [float 6] "inits" to 6, after all, but does not output a message upon initialising.  I suppose the idea is to be consistent with iemgui "init", which itself is obscure and requires the user to bring up a dialog window to understand how the patch works.  (Not to mention it clashes with [initbang], where "init" has a different meaning altogether.)

The only other potential advantage is that if you have [init] fanning out to several objects, you can test your patch by simply by connecting [bng] to the inlet of [init].  With [loadbang] you would have to create a [bng] and then connect it to every object that [loadbang] connects to.  But at least in Pd-l2ork you can either:

a) click [loadbang] with the mouse to output a bang.  (This is how Max/MSP solves this problem, too.)
b) select all the objects to which you'd like to connect, then draw a connection from [bng] to one of them.  In Pd-l2ork this will make a connection from the outlet to all of the selected objects.

-Jonathan