Traveler's Boots vs J-Boots

[Rygar]

So, that gnome in Sol A is selling Traveler's Boots:
http://wiki.project1999.com/Traveler%27s_Boots

The effect appears to be the same as j-boots (+35% run speed). 5k is around the retail price if I recall correctly, so much cheaper than j-boots MQ (average of 7k).

The only difference I see is a 1.5 second cast instead of insta cast.

Any reason NOT to buy these instead of j-boots? Only reason I can think of is j-boots gives you a nice junk buff (due to insta cast) during certain encounters in outdoor zones or when fighting dispellers outside.

Anything I'm missing? I haven't gotten my j-boots yet, so would rather buy the 1.5 sec casting ones if there is no serious drawback.