I can see several columns (fields) at once in a numpy structured array by indexing with a list of the field names, for example
fields
numpy
import n
As of Numpy version 1.13, the code you propose will return a view. See 'NumPy 1.12.0 Release Notes->Future Changes->Multiple-field manipulation of structured arrays' on this page:
https://docs.scipy.org/doc/numpy-dev/release.html