Originally Posted by: buckethead14are sweeeps alot different on a harmonic minor scale than on a natural minor scale and if so are they also harder?

Natural minor contains the following:

i - minor chord
ii dim - diminished chord (half dim if you are playing the 7th)
III - major chord
iv - minor chord
v - minor chord
VI - major chord
VII - major chord

Harmonic minor contains the following:

i - minor chord
ii dim - diminished chord (half dim if you are playing the 7th)
III aug - augmented chord
iv - minor chord
V - major chord
VI - major chord
vii dim - diminished chord (full dim if you are playing the 7th)

So, in order to sweep pick all the possible chords when changing from natural minor to harmonic minor, you will only need to add an augmented chord.

Although, outside of jazz (and "outside" rock fusiony players), few people do augmented sweeps. Usually, the III is done as a normal major chord. I personally use augmented sweeping chords almost exclusively as an altered V chord. It works great for that purpose.

I did a tutorial on advanced sweeping:
http://www.guitartricks.com/tutorial.php?input=211