When travelling with this set, I carry them both in a bag and never pick the iPod alone for changing songs. This piece will give no problems whatsoever in the bag even not when you put that bag on the table. It can even stand on the piece

The velcro is a good idea though I used a rubber band up to now.
BTW if you pick up the iPod alone 6" will hardly be enough. When I am at home lying/listening on the couch I hold the iPod solely in my hand but then I have a 10'' cable otherwise you keep 'dragging' that amp along

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Thanks for the nice comments and advise.
Hans