Sure, any DSLR can be used to shoot action photography of any kind.
While those lenses have an excellent range, many "skateboarding" photographers like to use extreme wide angle lenses, even fisheye lenses.
Pentax makes two lenses that may fit into your style of shooting.
The ultra wide angle 15 mm:
.http://www.pentaximaging.com/camera-lenses/smc_PENTAX_DA_15mm_F4_ED_AL_Limited/
And the Pentax 10-17 mm "fisheye" zoom
http://www.pentaximaging.com/camera-lenses/smc_PENTAX_DA_10-17mm_F3.5-4.5_ED_(IF)_Fish-Eye/