Is there a way to output more Matrix fields than one? I'm struggling to get an element criteria model of more matrix fields at once for entry related to tagField.

Example:
I have two matrixFields, where I want them in {% for block in entry.matrixFieldhandle %} loop.

I could do 

{% for block in entry.matrixFieldhandle1 %} My stuff {% endfor %}


and 

{% for block in entry.matrixFieldhandle2 %} My stuff {% endfor %}


but it's kind of silly to always set element model for each field. Anything simpler?

Couldn't find anything explanatory in documentation or here.
Not sure if this solves your problem, but you could try this:

{% set allMatrixBlocks = entry.matrixFieldhandle1.find | merge(entry.matrixFieldhandle2.find) %}

{% for block in allMatrixBlocks %} My stuff {% endfor %}