Can I use Chinker's Edge in a Snorkler? Yes! Just keep an eye on the stator to check for wear. Chinker's Edge wears stators slightly more than Log Jam.
Can I use Chinker's Edge on a joint over 2 inches? In general, no. Log Jam or Chinker's Edge would be better choices for gaps this wide. Log Builder and Conceal both work well on joints that range from 1/4" to 2" wide.