Symmetrohedra have many regular faces, but irregular faces are allowed in them as well. The octagons, hexagons, and squares in this polyhedron are regular, but the 48 triangles are scalene. Here’s what it looks like with these triangles rendered invisible:

Stella 4d was used to make these images; it may be tried for free at this website: http://www.software3d.com/Stella.php.