[mathilda]

I'd just take regular leash and train leash-walking in an area that is as boring as possible.
when the dog managed the leash-walking nicely in boring areas train step-by-step in more exciting surroundings.
Training proper leash-behavior inside the house, without disstraction is nice for example.
You don't need fancy training tools to do that. Just patience, consistency and a good way to reward the dog for good behaviour.

 

[mathilda]

call me conservative, but i think, training proper leash behaviour can be done without causing discomfort to the dog (that's how the EW works).