New Post: Advice please? Will SPUpdateMultipleListItems do what I would like it to?

At this stage, this is a design-type question, hence no code attached yet. What I'd be grateful for are some expert views on whether SPUpdateMultipleListItems is able (or best suited) to achieve the following:

I'm in the throes of creating a training booking system within SP Online. My data structure is evolving along the lines of a list of 'skills' with each skills relating to 1 or more 'competencies' in a stored in a separate list but matched using the Skill ID as a lookup.

The use case I am looking to achieve is to have a line manager select an employee, then select a 'Skill' that employee needs to be trained on (all good so far), but then after that selection is made, pull all the competencies relating to the selected skill into a task list of employee skill competencies. Its the function to create those items in the employee skills/competencies list that I think/hope SPUpdateMultipleListItems will achieve for me, but would like a sense-check on this approach given Marc's comments to the poster justinkelly here >>https://spservices.codeplex.com/wikipage?title=%24%28%29.SPServices.SPUpdateMultipleListItems(http://www.example.com)

Am hoping this is not too abstract a question to elicit any responses!

Thanks