The 2 ohm rating is usually achieved with two cabinets of 4 ohms each. There's few, if any production 2 ohm cabs out there, but it's not too difficult to achieve with a two-speaker cab and two 4 ohm speakers wired in parallel. A decent quality 4 ohm speaker is going to perform ok. The amp won't develop full power, but it will probably be adequate for practice. 4 ohm cabs are fairly common.
I use all types, counts, and materials for; strings, amps, basses, & speakers. Non club member #??