Subgauge tubes, even the short tubes, will noticeably affect handling. If you have a fairly flexible shooting style, can switch guns without a hitch, you might even find you like the added weight for range work.

As already noted, the truly economical alternative is a 3/4 oz 20. You can obtain factory loaded weenies, or load them yourself very easily. The disadvantage is ineligibility for 28 ga events.

Sam