[Magdalen] Readings?

[M J _Mike_ Logsdon]

>>>The interim at a church where I’ve done a lot of supply and will again for a few Sundays just does one reading, the Psalm and the Gospel. For the first reading he picks either the OT or Epistle reading for the day.<<<

At least the Gospel's a guarantee.  As a supply, would it be a problem if you merely stated at the start that the Lectionary will be followed while you're there?