The PO of our Sovereign
pulled out the gaucho, and replaced it with a pair of chair beds.
They're from Ikea, and contain a metal frame and a mattress which makes them quite comfortable as chairs, but surprisingly comfortable as beds. Another advantage is that they do not have to BOTH be deployed if you only have one sleep-over guest.
And also, if you are using them every night, they are quite easy to unfold in beds, or return to the chair design. The operation of doing this is spring-aided, so doesn't require tremendous strength.
They still sell several versions of them, in many colours. Have a look here: LYCKSELE LÖVÅS Chair bed - Henån beige - IKEA
There is a sofa version, but I have never sat in it or laid down on it, but we do like the chair ones. The covers can also be bought separately, if you get tired of the colour, or change decor.