[tor-relays] Bad idea to switch from a relay to a bridge?

[Nick]

Hi,

I've been running a very low bandwidth relay for a little while with 
my home ADSL connection, but given the up speed is so poor, and 
(more importantly) my ADSL provider has stopped switching my IP 
about every 24 hours, I'd like to switch to be a bridge.

However, I'm wondering whether the fact that my IP is already known 
as a relay means that it wouldn't be useful? That is, if the people 
bridges try to foil are likely to just blacklist any relays they see 
by default (it wasn't an exit or guard).

Thanks for any advice,

Nick