Sweat gland ducts are examples of stratified
cuboidal epithelium...usually however there are only
two layers of cells.
Stratified Columnar epithelium is rare. One place you
can find it is in the largest ducts of salivary glands
(parotid, submandibular, etc). The basal layer of cells
are cuboidal cells and the layer nearest the apical
surface includes columnar cells. The large droplets are
mucus, in Goblet cells.
When the tissue is stretched, the cells, especially those
on the surface, become flat. This allows organs lined
with transitional epithelium to change shape without
damaging the epithelial lining.
Orange arrow points to free surface . Image
on the left is an empty bladder. Image on
right a full bladder
(such as sweat, sebaceous glands)